diff options
author | Alim Akhtar <alim.akhtar@samsung.com> | 2016-07-05 15:28:53 +0530 |
---|---|---|
committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-07-19 17:48:06 +0200 |
commit | 70c96dfac0e231424e17743bd52f6cd2ff1f2439 (patch) | |
tree | 2dbdc99319b4df01179d28bedbc74ec6e70079ec /drivers/rtc/rtc-da9052.c | |
parent | 41a193c7615284cfa3ff3227e13c241f823b13d7 (diff) | |
download | linux-70c96dfac0e231424e17743bd52f6cd2ff1f2439.tar.bz2 |
rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
As per code flow s3c_rtc_setfreq() will get called with rtc clock disabled
and in set_freq we perform h/w registers read/write, which results in a
kernel crash on exynos7 platform while probing rtc driver.
Below is code flow:
s3c_rtc_probe()
clk_prepare_enable(info->rtc_clk) // rtc clock enabled
s3c_rtc_gettime() // will enable clk if not done, and disable it upon exit
s3c_rtc_setfreq() //then this will be called with clk disabled
This patch take cares of such issue by adding s3c_rtc_{enable/disable}_clk in
s3c_rtc_setfreq().
Fixes: 24e1455493da ("drivers/rtc/rtc-s3c.c: delete duplicate clock control")
Cc: <stable@vger.kernel.org>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Tested-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc/rtc-da9052.c')
0 files changed, 0 insertions, 0 deletions