Messages in this thread | | | Date | Wed, 14 Feb 2018 21:26:10 +0100 | From | Alexandre Belloni <> | Subject | Re: [PATCH 1/4] rtc: isl1208: Fix unintended clear of SR bits |
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On 23/01/2018 at 13:17:58 +0100, Michael Grzeschik wrote: > From: Denis Osterland <Denis.Osterland@diehl.com> > > After successful > sr = isl1208_i2c_set_regs(client, 0, regs, ISL1208_RTC_SECTION_LEN); > sr will be 0. > As a result > sr = i2c_smbus_write_byte_data(client, ISL1208_REG_SR, > sr & ~ISL1208_REG_SR_WRTC); > is equal to > sr = i2c_smbus_write_byte_data(client, ISL1208_REG_SR, 0); > which clears all flags in SR. > > Add an additional read of SR, to have value of SR in sr again. > > Signed-off-by: Denis Osterland <Denis.Osterland@diehl.com> > Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> > --- > drivers/rtc/rtc-isl1208.c | 5 +++++ > 1 file changed, 5 insertions(+) > Applied, thanks.
-- Alexandre Belloni, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering http://bootlin.com
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