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-rw-r--r--drivers/i2c/busses/i2c-hisi.c13
-rw-r--r--drivers/i2c/busses/i2c-imx-lpi2c.c6
-rw-r--r--drivers/i2c/busses/i2c-mxs.c18
-rw-r--r--drivers/i2c/busses/i2c-xgene-slimpro.c3
-rw-r--r--drivers/i2c/i2c-core-base.c13
-rw-r--r--drivers/i2c/i2c-core-of.c5
-rw-r--r--drivers/i2c/i2c-dev.c24
-rw-r--r--drivers/i2c/i2c-slave-eeprom.c2
-rw-r--r--drivers/i2c/i2c-slave-testunit.c2
-rw-r--r--drivers/i2c/i2c-smbus.c2
-rw-r--r--drivers/i2c/muxes/i2c-mux-ltc4306.c2
-rw-r--r--drivers/i2c/muxes/i2c-mux-pca9541.c2
-rw-r--r--drivers/i2c/muxes/i2c-mux-pca954x.c2
13 files changed, 66 insertions, 28 deletions
diff --git a/drivers/i2c/busses/i2c-hisi.c b/drivers/i2c/busses/i2c-hisi.c
index 8c6c7075c765..e067671b3ce2 100644
--- a/drivers/i2c/busses/i2c-hisi.c
+++ b/drivers/i2c/busses/i2c-hisi.c
@@ -316,6 +316,13 @@ static void hisi_i2c_xfer_msg(struct hisi_i2c_controller *ctlr)
max_write == 0)
break;
}
+
+ /*
+ * Disable the TX_EMPTY interrupt after finishing all the messages to
+ * avoid overwhelming the CPU.
+ */
+ if (ctlr->msg_tx_idx == ctlr->msg_num)
+ hisi_i2c_disable_int(ctlr, HISI_I2C_INT_TX_EMPTY);
}
static irqreturn_t hisi_i2c_irq(int irq, void *context)
@@ -341,7 +348,11 @@ static irqreturn_t hisi_i2c_irq(int irq, void *context)
hisi_i2c_read_rx_fifo(ctlr);
out:
- if (int_stat & HISI_I2C_INT_TRANS_CPLT || ctlr->xfer_err) {
+ /*
+ * Only use TRANS_CPLT to indicate the completion. On error cases we'll
+ * get two interrupts, INT_ERR first then TRANS_CPLT.
+ */
+ if (int_stat & HISI_I2C_INT_TRANS_CPLT) {
hisi_i2c_disable_int(ctlr, HISI_I2C_INT_ALL);
hisi_i2c_clear_int(ctlr, HISI_I2C_INT_ALL);
complete(ctlr->completion);
diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index 188f2a36d2fd..a49b14d52a98 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -463,6 +463,8 @@ static int lpi2c_imx_xfer(struct i2c_adapter *adapter,
if (num == 1 && msgs[0].len == 0)
goto stop;
+ lpi2c_imx->rx_buf = NULL;
+ lpi2c_imx->tx_buf = NULL;
lpi2c_imx->delivered = 0;
lpi2c_imx->msglen = msgs[i].len;
init_completion(&lpi2c_imx->complete);
@@ -503,10 +505,14 @@ disable:
static irqreturn_t lpi2c_imx_isr(int irq, void *dev_id)
{
struct lpi2c_imx_struct *lpi2c_imx = dev_id;
+ unsigned int enabled;
unsigned int temp;
+ enabled = readl(lpi2c_imx->base + LPI2C_MIER);
+
lpi2c_imx_intctrl(lpi2c_imx, 0);
temp = readl(lpi2c_imx->base + LPI2C_MSR);
+ temp &= enabled;
if (temp & MSR_RDF)
lpi2c_imx_read_rxfifo(lpi2c_imx);
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index d113bed79545..e0f3b3545cfe 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -171,7 +171,7 @@ static void mxs_i2c_dma_irq_callback(void *param)
}
static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
- struct i2c_msg *msg, uint32_t flags)
+ struct i2c_msg *msg, u8 *buf, uint32_t flags)
{
struct dma_async_tx_descriptor *desc;
struct mxs_i2c_dev *i2c = i2c_get_adapdata(adap);
@@ -226,7 +226,7 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
}
/* Queue the DMA data transfer. */
- sg_init_one(&i2c->sg_io[1], msg->buf, msg->len);
+ sg_init_one(&i2c->sg_io[1], buf, msg->len);
dma_map_sg(i2c->dev, &i2c->sg_io[1], 1, DMA_FROM_DEVICE);
desc = dmaengine_prep_slave_sg(i2c->dmach, &i2c->sg_io[1], 1,
DMA_DEV_TO_MEM,
@@ -259,7 +259,7 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap,
/* Queue the DMA data transfer. */
sg_init_table(i2c->sg_io, 2);
sg_set_buf(&i2c->sg_io[0], &i2c->addr_data, 1);
- sg_set_buf(&i2c->sg_io[1], msg->buf, msg->len);
+ sg_set_buf(&i2c->sg_io[1], buf, msg->len);
dma_map_sg(i2c->dev, i2c->sg_io, 2, DMA_TO_DEVICE);
desc = dmaengine_prep_slave_sg(i2c->dmach, i2c->sg_io, 2,
DMA_MEM_TO_DEV,
@@ -563,6 +563,7 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg,
struct mxs_i2c_dev *i2c = i2c_get_adapdata(adap);
int ret;
int flags;
+ u8 *dma_buf;
int use_pio = 0;
unsigned long time_left;
@@ -588,13 +589,20 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg,
if (ret && (ret != -ENXIO))
mxs_i2c_reset(i2c);
} else {
+ dma_buf = i2c_get_dma_safe_msg_buf(msg, 1);
+ if (!dma_buf)
+ return -ENOMEM;
+
reinit_completion(&i2c->cmd_complete);
- ret = mxs_i2c_dma_setup_xfer(adap, msg, flags);
- if (ret)
+ ret = mxs_i2c_dma_setup_xfer(adap, msg, dma_buf, flags);
+ if (ret) {
+ i2c_put_dma_safe_msg_buf(dma_buf, msg, false);
return ret;
+ }
time_left = wait_for_completion_timeout(&i2c->cmd_complete,
msecs_to_jiffies(1000));
+ i2c_put_dma_safe_msg_buf(dma_buf, msg, true);
if (!time_left)
goto timeout;
diff --git a/drivers/i2c/busses/i2c-xgene-slimpro.c b/drivers/i2c/busses/i2c-xgene-slimpro.c
index 63259b3ea5ab..3538d36368a9 100644
--- a/drivers/i2c/busses/i2c-xgene-slimpro.c
+++ b/drivers/i2c/busses/i2c-xgene-slimpro.c
@@ -308,6 +308,9 @@ static int slimpro_i2c_blkwr(struct slimpro_i2c_dev *ctx, u32 chip,
u32 msg[3];
int rc;
+ if (writelen > I2C_SMBUS_BLOCK_MAX)
+ return -EINVAL;
+
memcpy(ctx->dma_buffer, data, writelen);
paddr = dma_map_single(ctx->dev, ctx->dma_buffer, writelen,
DMA_TO_DEVICE);
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index cb5fa971d67e..ae3af738b03f 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -561,15 +561,8 @@ static int i2c_device_probe(struct device *dev)
goto err_detach_pm_domain;
}
- /*
- * When there are no more users of probe(),
- * rename probe_new to probe.
- */
- if (driver->probe_new)
- status = driver->probe_new(client);
- else if (driver->probe)
- status = driver->probe(client,
- i2c_match_id(driver->id_table, client));
+ if (driver->probe)
+ status = driver->probe(client);
else
status = -EINVAL;
@@ -1057,7 +1050,7 @@ static int dummy_probe(struct i2c_client *client)
static struct i2c_driver dummy_driver = {
.driver.name = "dummy",
- .probe_new = dummy_probe,
+ .probe = dummy_probe,
.id_table = dummy_id,
};
diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c
index bce6b796e04c..545436b7dd53 100644
--- a/drivers/i2c/i2c-core-of.c
+++ b/drivers/i2c/i2c-core-of.c
@@ -178,6 +178,11 @@ static int of_i2c_notify(struct notifier_block *nb, unsigned long action,
return NOTIFY_OK;
}
+ /*
+ * Clear the flag before adding the device so that fw_devlink
+ * doesn't skip adding consumers to this device.
+ */
+ rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE;
client = of_i2c_register_device(adap, rd->dn);
if (IS_ERR(client)) {
dev_err(&adap->dev, "failed to create client for '%pOF'\n",
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 107623c4cc14..95a0b63ac560 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -646,7 +646,7 @@ static void i2cdev_dev_release(struct device *dev)
kfree(i2c_dev);
}
-static int i2cdev_attach_adapter(struct device *dev, void *dummy)
+static int i2cdev_attach_adapter(struct device *dev)
{
struct i2c_adapter *adap;
struct i2c_dev *i2c_dev;
@@ -685,7 +685,7 @@ err_put_i2c_dev:
return NOTIFY_DONE;
}
-static int i2cdev_detach_adapter(struct device *dev, void *dummy)
+static int i2cdev_detach_adapter(struct device *dev)
{
struct i2c_adapter *adap;
struct i2c_dev *i2c_dev;
@@ -711,9 +711,9 @@ static int i2cdev_notifier_call(struct notifier_block *nb, unsigned long action,
switch (action) {
case BUS_NOTIFY_ADD_DEVICE:
- return i2cdev_attach_adapter(dev, NULL);
+ return i2cdev_attach_adapter(dev);
case BUS_NOTIFY_DEL_DEVICE:
- return i2cdev_detach_adapter(dev, NULL);
+ return i2cdev_detach_adapter(dev);
}
return NOTIFY_DONE;
@@ -725,6 +725,18 @@ static struct notifier_block i2cdev_notifier = {
/* ------------------------------------------------------------------------- */
+static int __init i2c_dev_attach_adapter(struct device *dev, void *dummy)
+{
+ i2cdev_attach_adapter(dev);
+ return 0;
+}
+
+static int __exit i2c_dev_detach_adapter(struct device *dev, void *dummy)
+{
+ i2cdev_detach_adapter(dev);
+ return 0;
+}
+
/*
* module load/unload record keeping
*/
@@ -752,7 +764,7 @@ static int __init i2c_dev_init(void)
goto out_unreg_class;
/* Bind to already existing adapters right away */
- i2c_for_each_dev(NULL, i2cdev_attach_adapter);
+ i2c_for_each_dev(NULL, i2c_dev_attach_adapter);
return 0;
@@ -768,7 +780,7 @@ out:
static void __exit i2c_dev_exit(void)
{
bus_unregister_notifier(&i2c_bus_type, &i2cdev_notifier);
- i2c_for_each_dev(NULL, i2cdev_detach_adapter);
+ i2c_for_each_dev(NULL, i2c_dev_detach_adapter);
class_destroy(i2c_dev_class);
unregister_chrdev_region(MKDEV(I2C_MAJOR, 0), I2C_MINORS);
}
diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c
index 5f25f23c4ff8..5946c0d0aef9 100644
--- a/drivers/i2c/i2c-slave-eeprom.c
+++ b/drivers/i2c/i2c-slave-eeprom.c
@@ -207,7 +207,7 @@ static struct i2c_driver i2c_slave_eeprom_driver = {
.driver = {
.name = "i2c-slave-eeprom",
},
- .probe_new = i2c_slave_eeprom_probe,
+ .probe = i2c_slave_eeprom_probe,
.remove = i2c_slave_eeprom_remove,
.id_table = i2c_slave_eeprom_id,
};
diff --git a/drivers/i2c/i2c-slave-testunit.c b/drivers/i2c/i2c-slave-testunit.c
index 75ee7ebdb614..a49642bbae4b 100644
--- a/drivers/i2c/i2c-slave-testunit.c
+++ b/drivers/i2c/i2c-slave-testunit.c
@@ -171,7 +171,7 @@ static struct i2c_driver i2c_slave_testunit_driver = {
.driver = {
.name = "i2c-slave-testunit",
},
- .probe_new = i2c_slave_testunit_probe,
+ .probe = i2c_slave_testunit_probe,
.remove = i2c_slave_testunit_remove,
.id_table = i2c_slave_testunit_id,
};
diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
index cd19546d31fc..138c3f5e0093 100644
--- a/drivers/i2c/i2c-smbus.c
+++ b/drivers/i2c/i2c-smbus.c
@@ -169,7 +169,7 @@ static struct i2c_driver smbalert_driver = {
.driver = {
.name = "smbus_alert",
},
- .probe_new = smbalert_probe,
+ .probe = smbalert_probe,
.remove = smbalert_remove,
.id_table = smbalert_ids,
};
diff --git a/drivers/i2c/muxes/i2c-mux-ltc4306.c b/drivers/i2c/muxes/i2c-mux-ltc4306.c
index 70835825083f..5a03031519be 100644
--- a/drivers/i2c/muxes/i2c-mux-ltc4306.c
+++ b/drivers/i2c/muxes/i2c-mux-ltc4306.c
@@ -306,7 +306,7 @@ static struct i2c_driver ltc4306_driver = {
.name = "ltc4306",
.of_match_table = of_match_ptr(ltc4306_of_match),
},
- .probe_new = ltc4306_probe,
+ .probe = ltc4306_probe,
.remove = ltc4306_remove,
.id_table = ltc4306_id,
};
diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c
index 09d1d9e67e31..ce0fb69249a8 100644
--- a/drivers/i2c/muxes/i2c-mux-pca9541.c
+++ b/drivers/i2c/muxes/i2c-mux-pca9541.c
@@ -336,7 +336,7 @@ static struct i2c_driver pca9541_driver = {
.name = "pca9541",
.of_match_table = of_match_ptr(pca9541_of_match),
},
- .probe_new = pca9541_probe,
+ .probe = pca9541_probe,
.remove = pca9541_remove,
.id_table = pca9541_id,
};
diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
index 3639e6d7304c..0ccee2ae5720 100644
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -554,7 +554,7 @@ static struct i2c_driver pca954x_driver = {
.pm = &pca954x_pm,
.of_match_table = pca954x_of_match,
},
- .probe_new = pca954x_probe,
+ .probe = pca954x_probe,
.remove = pca954x_remove,
.id_table = pca954x_id,
};
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