diff options
| author | Prabu Thangamuthu <[email protected]> | 2015-05-28 12:21:06 +0000 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2015-06-12 09:31:01 +0200 |
| commit | 048fd7e665cef45630102dc8bf81971fbc82e52c (patch) | |
| tree | 223c1925b70c5d5610285f8852db60a31f6a388c /tools/perf/util/trace-event-scripting.c | |
| parent | 5fd26c7ecb32082745b0bd33c8e35badd1cb5a91 (diff) | |
mmc: dw_mmc: insmod followed by rmmod will hung for eMMC
Remove module of dw_mmc driver will hung for eMMC devices if we follow the
steps which are listed below,
insmod dw_mmc.ko
insmod dw_mmc-pci.ko
rmmod dw_mmc-pci.ko
The root cause for this issue is, dw_mci_remove() will disable all the
interrupts by programming 0x0 to INTMASK register then it will call
dw_mci_cleanup_slot(). But dw_mci_cleanup_slot() is issuing CMD6 to
disable the eMMC boot partition and it is waiting for Command Complete
interrupt. Since INTMASK was already cleared by dw_mci_remove(), Command
Complete interrupt is not reaching the system. This leads to process hung.
Signed-off-by: Prabu Thangamuthu <[email protected]>
Signed-off-by: Jaehoon Chung <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions