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| author | Sachin Kamat <sachin.kamat@linaro.org> | 2013-11-06 15:09:18 +0530 |
|---|---|---|
| committer | Hyungwon Hwang <human.hwang@samsung.com> | 2014-12-17 16:18:03 +0900 |
| commit | fea320207f5174f6cdf23d7afb4100bd49edea34 (patch) | |
| tree | cead2e7a28887402f9f94e7189917e1876ccc749 /drivers | |
| parent | e16aca07504c52ca2604fcf7a34c1bd699df97a8 (diff) | |
| download | linux-3.10-fea320207f5174f6cdf23d7afb4100bd49edea34.tar.gz linux-3.10-fea320207f5174f6cdf23d7afb4100bd49edea34.tar.bz2 linux-3.10-fea320207f5174f6cdf23d7afb4100bd49edea34.zip | |
i2c: exynos5: Remove incorrect clk_disable_unprepare
clk_disable_unprepare in remove causes an imbalance and hence gives
the below crash on module remove. While at it also remove some
duplicate code from probe.
/ $ rmmod i2c-exynos5
[ 6.996374] ------------[ cut here ]------------
[ 6.999523] WARNING: CPU: 2 PID: 1137 at drivers/clk/clk.c:842 clk_disable+0x18/0x24()
[ 7.007403] Modules linked in: i2c_exynos5(-)
[ 7.011747] CPU: 2 PID: 1137 Comm: rmmod Not tainted 3.12.0-next-20131105-00083-g16f4799-dirty #21
[ 7.020696] [<c0014e0c>] (unwind_backtrace+0x0/0xf4) from [<c0011784>] (show_stack+0x10/0x14)
[ 7.029190] [<c0011784>] (show_stack+0x10/0x14) from [<c037acd4>] (dump_stack+0x7c/0xb0)
[ 7.037255] [<c037acd4>] (dump_stack+0x7c/0xb0) from [<c001e0ac>] (warn_slowpath_common+0x6c/0x88)
[ 7.046190] [<c001e0ac>] (warn_slowpath_common+0x6c/0x88) from [<c001e164>] (warn_slowpath_null+0x1c/0x24)
[ 7.055818] [<c001e164>] (warn_slowpath_null+0x1c/0x24) from [<c02dcde4>] (clk_disable+0x18/0x24)
[ 7.064670] [<c02dcde4>] (clk_disable+0x18/0x24) from [<bf0002d4>] (exynos5_i2c_remove+0x1c/0x34 [i2c_exynos5])
[ 7.074736] [<bf0002d4>] (exynos5_i2c_remove+0x1c/0x34 [i2c_exynos5]) from [<c02274a8>] (__device_release_driver+0x58/0xb0)
[ 7.085836] [<c02274a8>] (__device_release_driver+0x58/0xb0) from [<c0227b88>] (driver_detach+0xac/0xb0)
[ 7.095291] [<c0227b88>] (driver_detach+0xac/0xb0) from [<c02271c0>] (bus_remove_driver+0x4c/0xa0)
[ 7.104227] [<c02271c0>] (bus_remove_driver+0x4c/0xa0) from [<c00725dc>] (SyS_delete_module+0x124/0x194)
[ 7.113682] [<c00725dc>] (SyS_delete_module+0x124/0x194) from [<c000e2e0>] (ret_fast_syscall+0x0/0x30)
[ 7.122957] ---[ end trace 23bb6e4e0bf52196 ]---
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/busses/i2c-exynos5.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index 8cc81853320..222f3323071 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -704,10 +704,6 @@ static int exynos5_i2c_probe(struct platform_device *pdev) of_i2c_register_devices(&i2c->adap); platform_set_drvdata(pdev, i2c); - clk_disable_unprepare(i2c->clk); - - return 0; - err_clk: clk_disable_unprepare(i2c->clk); return ret; @@ -718,7 +714,6 @@ static int exynos5_i2c_remove(struct platform_device *pdev) struct exynos5_i2c *i2c = platform_get_drvdata(pdev); i2c_del_adapter(&i2c->adap); - clk_disable_unprepare(i2c->clk); return 0; } |