diff options
| author | Sanjeev Premi <premi@ti.com> | 2011-07-11 20:50:31 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-06 14:14:10 -0800 |
| commit | 4838b7e04451e425895c77f462ae1a70d6d3ff62 (patch) | |
| tree | 04b3fbb7a5826923e4e935ab888afbde6b570796 | |
| parent | 244e209cbfb8fef744f47f4a9fe0b8c036772d8f (diff) | |
mfd: Fix mismatch in twl4030 mutex lock-unlock
commit e178ccb33569da17dc897a08a3865441b813bdfb upstream.
A mutex is locked on entry into twl4030_madc_conversion().
Immediate return on some error conditions leaves the
mutex locked.
This patch ensures that mutex is always unlocked before
leaving the function.
Signed-off-by: Sanjeev Premi <premi@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/mfd/twl4030-madc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/mfd/twl4030-madc.c b/drivers/mfd/twl4030-madc.c index 3941ddcf15f..b5d598c3aa7 100644 --- a/drivers/mfd/twl4030-madc.c +++ b/drivers/mfd/twl4030-madc.c @@ -530,13 +530,13 @@ int twl4030_madc_conversion(struct twl4030_madc_request *req) if (ret) { dev_err(twl4030_madc->dev, "unable to write sel register 0x%X\n", method->sel + 1); - return ret; + goto out; } ret = twl_i2c_write_u8(TWL4030_MODULE_MADC, ch_lsb, method->sel); if (ret) { dev_err(twl4030_madc->dev, "unable to write sel register 0x%X\n", method->sel + 1); - return ret; + goto out; } /* Select averaging for all channels if do_avg is set */ if (req->do_avg) { @@ -546,7 +546,7 @@ int twl4030_madc_conversion(struct twl4030_madc_request *req) dev_err(twl4030_madc->dev, "unable to write avg register 0x%X\n", method->avg + 1); - return ret; + goto out; } ret = twl_i2c_write_u8(TWL4030_MODULE_MADC, ch_lsb, method->avg); @@ -554,7 +554,7 @@ int twl4030_madc_conversion(struct twl4030_madc_request *req) dev_err(twl4030_madc->dev, "unable to write sel reg 0x%X\n", method->sel + 1); - return ret; + goto out; } } if (req->type == TWL4030_MADC_IRQ_ONESHOT && req->func_cb != NULL) { |