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vio_device_id are not supposed to change at runtime. All functions
working with vio_device_id provided by <asm/vio.h> work with
const vio_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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vio_device_id are not supposed to change at runtime. All functions
working with vio_device_id provided by <asm/vio.h> work with
const vio_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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mips_cdmm_device_id are not supposed to change at runtime.
mips_cdmm_driver is working with const 'id_table'. So mark
the non-const mips_cdmm_device_id structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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This patch introduces the 8250_men_mcb driver for the MEN 16Z125
IP-Core. This is a 16550-type UART with a 60 byte FIFO.
Due to strange old hardware, every board using this IP core requires
different values for uartclk. A reasonable default is included in
addition to the support of three boards. Additional values for other
boards will be added later.
This v2 has some whitespace fixes, I screwed this up yesterday.
Signed-off-by: Michael Moese <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Introduce mcb_get_resource() as a common accessor to a mcb device's memory or
IRQ resources.
Signed-off-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The imx_transmit_buffer function should return if TX DMA has already
been started and not just skip over the buffer PIO write loop. (Which
did fix the initial problem, but could have unintentional side-effects)
Tested on an i.MX6Q board with half-duplex RS-485 and with RS-232.
Cc: Clemens Gruber <[email protected]>
Cc: Uwe-Kleine König <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Fabio Estevam <[email protected]>
Fixes: 514ab34dbad6 ("serial: imx: Prevent TX buffer PIO write when a DMA has been started")
Signed-off-by: Ian Jamison <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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If any key on console is pressed when board is suspended,
board hangs.
Driver's interrupt handler must be guaranteed not to run while
resume/suspend_noirq() are being executed. See include/linux/pm.h
for details.
Tested on i.MX6 based board.
The idea of this fix is based on commit in official i.MX kernel tree:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git
commit 81e8e7d91d81 ("tty: serial: imx: disable irq after suspend")
Disable rx irq after suspend to avoid interrupt coming in early resume.
Signed-off-by: Fugang Duan <[email protected]>
Signed-off-by: Maxim Yu. Osipov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Add suspend/resume support for UniPhier serial driver.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The 8250 core uses the SCR as a canary to discover if the console has
been powered-off.
This hardware does not have SCR at offset 7, but an unused register
CHAR at a different offset. As long as the character interrupt is
disabled, the register access has no impact, so it is useful as an
alternative scratch register.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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serial8250_register_8250_port() may allocate a different port index
than requested. The driver needs to remember the returned value of
serial8250_register_8250_port() for later use. Otherwise, the .remove
hook may unregister a different port.
Fixes: 1a8d2903cb6a ("serial: 8250_uniphier: add UniPhier serial driver")
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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MT7622/23 SoC
MediaTek BTIF controller is the serial interface similar to UART but it
works only as the digital device which is mainly used to communicate with
the connectivity module called CONNSYS inside the SoC which could be mostly
found on those MediaTek SoCs with Bluetooth feature such as MT7622 and
MT7623 SoCs.
And the controller is made as being compatible with the 8250 register
layout with extra registers such as DMA enablement so it tends to be
integrated with reusing 8250 OF driver. However, DMA mode is not being
supported yet in the current driver.
Signed-off-by: Sean Wang <[email protected]>
Suggested-by: Andy Shevchenko <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Document the devicetree bindings in 8250.txt for MediaTek BTIF
controller which could be found on MT7622 and MT7623 SoC.
Signed-off-by: Sean Wang <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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When moving earlycon early_param handling to serial, the devicetree
earlycons enable condition changed slightly.
We used to only do that for 'console'/'earlycon', but now would also
for 'console='/'earlycon='.
Fix it by using the same condition like before.
Fixes: d503187b6cc4 (of/serial: move earlycon early_param handling to serial)
Signed-off-by: Jeffy Chen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Acked-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Acked-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Acked-by: Timur Tabi <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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parisc_device_id are not supposed to change at runtime. All functions
working with parisc_device_id provided by <asm/parisc-device.h> work
with const parisc_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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parisc_device_id are not supposed to change at runtime. All functions
working with parisc_device_id provided by <asm/parisc-device.h> work
with const parisc_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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66AK2G UART instances are not apart of the ALWAYS_ON power domain.
Therefore, pm_runtime calls must be made to properly insure the appropriate
power domains needed by UART are on. Keep legacy clk api calls since other
users of this driver may not support PM runtime.
Signed-off-by: Franklin S Cooper Jr <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Use slightly more compact of_property_read_bool() calls for the boolean
properties instead of of_find_property() calls.
Signed-off-by: Sergei Shtylyov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Previously the timers where based on the classic timers, giving a too
coarse resolution on systems with configs of less than 1000 HZ.
This patch changes the rs485 timers to hrtimers.
Signed-off-by: Rafael Gago Castano <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Previously the rs485 settings weren't considered when setting the RTS
line, so e.g. closing and reopening a port made serial_core to drive
the line as if rs485 was disabled.
This patch fixes those issues.
Signed-off-by: Rafael Gago Castano <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
Signed-off-by: Himanshu Jha <[email protected]>
Reviewed-by: Matthias Brugger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Document support for the (H)SCIF serial ports in the Renesas R-Car D3
(r8a77995) SoC.
No driver update is needed.
Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Simon Horman <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Use more compact of_property_read_bool() call for a boolean property
instead of of_find_property() call in sci_parse_dt().
Signed-off-by: Sergei Shtylyov <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The UAPI has a global list of unique numbers for different port types.
The commit
a2d6a987bfe4 ("serial: 8250: Add new port type for TI DA8xx/66AK2x")
introduced a new port type and brought the collision with two other port
types.
Reuse 95 for it instead.
Fixes: a2d6a987bfe4 ("serial: 8250: Add new port type for TI DA8xx/66AK2x")
Cc: David Lechner <[email protected]>
Cc: Sekhar Nori <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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PORT_MFD is not in use since commit
1bd187de5364 ("x86, intel-mid: remove Intel MID specific serial support")
Remove leftover.
Fixes: 1bd187de5364 ("x86, intel-mid: remove Intel MID specific serial support")
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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It used to be a gap in port definitions after PORT_MAX_8250. Since the
new drivers are coming the gap become shorter and shorter until the
commit a2d6a987bfe4 ("serial: 8250: Add new port type for TI DA8xx/66AK2x")
completely removed it.
So, while type here is just a formality, make things a little bit more
explicit for this driver and move port types to UAPI header. Note,
it uses two types for now.
Fixes: fddceb8b5399 ("tty: 8250: Add 64byte UART support for FSL platforms")
Cc: Priyanka Jain <[email protected]>
Cc: Poonam Aggrwal <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no need to duplicate a flag which IRQ core takes care of.
Replace custom flag by IRQ core API that retrieves its state.
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no need to duplicate a flag which IRQ core takes care of.
Replace custom flag by IRQ core API that retrieves its state.
Cc: Maxime Coquelin <[email protected]>
Cc: Alexandre Torgue <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no need to duplicate a flag which IRQ core takes care of.
Replace custom flag by IRQ core API that retrieves its state.
Cc: Patrice Chotard <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no need to duplicate a flag which IRQ core takes care of.
Replace custom flag by IRQ core API that retrieves its state.
Cc: Bhuvanchandra DV <[email protected]>
Cc: Dong Aisheng <[email protected]>
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Move the request_irq() call to the end of the msm_startup(),
so that we don't handle interrupts while msm_startup() is
running. This avoids potential races while initialization
is in progress. For example, consider below scenario
where rx handler reads the intermediate value of dma->chan,
set in msm_request_rx_dma(), and tries to do dma mapping,
which results in data abort.
uart_port_startup()
msm_startup()
request_irq()
...
msm_request_rx_dma()
...
dma->chan = dma_request_slave_channel_reason(dev, "rx");
<UART RX IRQ>
msm_uart_irq()
msm_handle_rx_dm()
msm_start_rx_dma()
dma->desc = dma_map_single()
<data abort>
Signed-off-by: Neeraj Upadhyay <[email protected]>
Reviewd-by: Andy Gross <[email protected]>
Reviewed-by: Stephen Boyd <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is no need to do a NULL check for debugfs_remove().
Quoting Documentation/filesystems/debugfs.txt:
"The dentry value can be NULL, in which case nothing will be removed."
, so remove the unneeded NULL check.
Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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platform_get_irq() returns an error code, but the sprd_serial driver
ignores it and always returns -ENODEV. This is not correct and,
prevents -EPROBE_DEFER from being propagated properly.
Also, notice that platform_get_irq() no longer returns 0 on error:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af
Print and propagate the return value of platform_get_irq on failure.
This issue was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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100µs was too short for low speed transmission
(9600bps)
Signed-off-by: Gerald Baeza <[email protected]>
Signed-off-by: Bich Hemon <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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amba_id are not supposed to change at runtime. All functions
working with const amba_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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amba_id are not supposed to change at runtime. All functions
working with const amba_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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These vendor_data structures are only stored in the vendor field of
the uart_amba_port structure, as defined in the same file, and this
field is declared as const. Thus the vendor_data structures can be
const too.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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We want the fixes in here, and we resolve the merge issue in the
8250_core.c file.
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Pull MIPS fixes from Ralf Baechle:
"Another round of MIPS fixes:
- compressed boot: Ignore a generated .c file
- VDSO: Fix a register clobber list
- DECstation: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression
- Octeon: Fix recent cleanups that cleaned away a bit too much thus
breaking the arch side of the EDAC and USB drivers.
- uasm: Fix duplicate const in "const struct foo const bar[]" which
GCC 7.1 no longer accepts.
- Fix race on setting and getting cpu_online_mask
- Fix preemption issue. To do so cleanly introduce macro to get the
size of L3 cache line.
- Revert include cleanup that sometimes results in build error
- MicroMIPS uses bit 0 of the PC to indicate microMIPS mode. Make
sure this bit is set for kernel entry as well.
- Prevent configuring the kernel for both microMIPS and MT. There are
no such CPUs currently and thus the combination is unsupported and
results in build errors.
This has been sitting in linux-next for a few days and has survived
automated testing by Imagination's test farm. No known regressions
pending except a number of issues that crept up due to lots of people
switching to GCC 7.1"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Set ISA bit in entry-y for microMIPS kernels
MIPS: Prevent building MT support for microMIPS kernels
MIPS: PCI: Fix smp_processor_id() in preemptible
MIPS: Introduce cpu_tcache_line_size
MIPS: DEC: Fix an int-handler.S CPU_DADDI_WORKAROUNDS regression
MIPS: VDSO: Fix clobber lists in fallback code paths
Revert "MIPS: Don't unnecessarily include kmalloc.h into <asm/cache.h>."
MIPS: OCTEON: Fix USB platform code breakage.
MIPS: Octeon: Fix broken EDAC driver.
MIPS: gitignore: ignore generated .c files
MIPS: Fix race on setting and getting cpu_online_mask
MIPS: mm: remove duplicate "const" qualifier on insn_table
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