From mboxrd@z Thu Jan 1 00:00:00 1970 From: daniel.lezcano@linaro.org (Daniel Lezcano) Date: Mon, 22 Jul 2013 05:50:09 +0200 Subject: [PATCH v4 02/20] clocksource: samsung_pwm_timer: Correct definition of AUTORELOAD bit In-Reply-To: <1374278673-25615-4-git-send-email-tomasz.figa@gmail.com> References: <1374278673-25615-1-git-send-email-tomasz.figa@gmail.com> <1374278673-25615-4-git-send-email-tomasz.figa@gmail.com> Message-ID: <51ECABF1.4040600@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 07/20/2013 02:04 AM, Tomasz Figa wrote: > PWM channel 4 has its autoreload bit located at different position. This > patch fixes the driver to account for that. > > This fixes a problem with the clocksource hanging after it overflows because > it is not reloaded any more. > > Signed-off-by: Tomasz Figa > --- > drivers/clocksource/samsung_pwm_timer.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c > index 3fa5b07..e238fb0 100644 > --- a/drivers/clocksource/samsung_pwm_timer.c > +++ b/drivers/clocksource/samsung_pwm_timer.c > @@ -47,7 +47,8 @@ > #define TCON_START(chan) (1 << (4 * (chan) + 0)) > #define TCON_MANUALUPDATE(chan) (1 << (4 * (chan) + 1)) > #define TCON_INVERT(chan) (1 << (4 * (chan) + 2)) > -#define TCON_AUTORELOAD(chan) (1 << (4 * (chan) + 3)) > +#define TCON_AUTORELOAD(chan) (1 << (4 * (chan) \ > + + (((chan) < 5) ? 3 : 2))) This macro is not readable. Please, fix it up with a comment please. > > DEFINE_SPINLOCK(samsung_pwm_lock); > EXPORT_SYMBOL(samsung_pwm_lock); > -- Linaro.org ? Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog