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| author | Michael Hennerich <michael.hennerich@analog.com> | 2007-07-24 18:03:45 +0800 |
|---|---|---|
| committer | Bryan Wu <bryan.wu@analog.com> | 2007-07-24 18:03:45 +0800 |
| commit | 314c98d589b9da40af42cfe7213eff04c74caea3 (patch) | |
| tree | 3c91afc0d6b0f0150aa7f545c0060f96d751a9d4 | |
| parent | 06039e90b90af4029184d577b3c66e59f6039a9e (diff) | |
| download | linux-3.10-314c98d589b9da40af42cfe7213eff04c74caea3.tar.gz linux-3.10-314c98d589b9da40af42cfe7213eff04c74caea3.tar.bz2 linux-3.10-314c98d589b9da40af42cfe7213eff04c74caea3.zip | |
Blackfin arch: add missing gpio error handling to make sure we roll back requests in case one fails
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 10 | ||||
| -rw-r--r-- | arch/blackfin/mach-bf548/gpio.c | 11 |
2 files changed, 17 insertions, 4 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index b818a8da121..979cf79d379 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -711,9 +711,15 @@ int peripheral_request_list(unsigned short per[], const char *label) int ret; for (cnt = 0; per[cnt] != 0; cnt++) { + ret = peripheral_request(per[cnt], label); - if (ret < 0) - return ret; + + if (ret < 0) { + for ( ; cnt > 0; cnt--) { + peripheral_free(per[cnt - 1]); + } + return ret; + } } return 0; diff --git a/arch/blackfin/mach-bf548/gpio.c b/arch/blackfin/mach-bf548/gpio.c index c073ab36066..f3b9deacd33 100644 --- a/arch/blackfin/mach-bf548/gpio.c +++ b/arch/blackfin/mach-bf548/gpio.c @@ -212,11 +212,18 @@ int peripheral_request_list(unsigned short per[], const char *label) int ret; for (cnt = 0; per[cnt] != 0; cnt++) { + ret = peripheral_request(per[cnt], label); - if (ret < 0) - return ret; + + if (ret < 0) { + for ( ; cnt > 0; cnt--) { + peripheral_free(per[cnt - 1]); + } + return ret; + } } + return 0; } EXPORT_SYMBOL(peripheral_request_list); |