From: Zhang Rui <rui.zhang@intel.com> To: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>, Colin King <colin.king@canonical.com>, Eduardo Valentin <edubezval@gmail.com>, Daniel Lezcano <daniel.lezcano@linaro.org>, linux-pm@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH][V2] drivers: thermal: processor_thermal_device: fix missing bitwise-or operators Date: Mon, 19 Aug 2019 14:32:43 +0800 [thread overview] Message-ID: <95dce698e7790dac7178e950a6a9dde71d231cae.camel@intel.com> (raw) In-Reply-To: <42db46c33466a12221e0968e82c4c4ee17b0341d.camel@linux.intel.com> On Mon, 2019-07-29 at 14:09 -0700, Srinivas Pandruvada wrote: > On Mon, 2019-07-29 at 13:03 +0100, Colin King wrote: > > From: Colin Ian King <colin.king@canonical.com> > > > > The variable val is having the top 8 bits cleared and then the > > variable is being > > re-assinged and setting just the top 8 bits. I believe the > > intention > > was bitwise-or > > in the top 8 bits. Fix this by replacing the = operators with &= > > and > > > = instead. > > > > Addresses-Coverity: ("Unused value") > > Fixes: b0c74b08517e ("drivers: thermal: processor_thermal_device: > > Export sysfs inteface for TCC offset") > > Signed-off-by: Colin Ian King <colin.king@canonical.com> > > Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com > > Hi, Colin, thanks for the fix, as b0c74b08517e ("drivers: thermal: processor_thermal_device: Export sysfs inteface for TCC offset") has not been shipped in upstream yet, I will fold this fix into the original patch directly. thanks, rui > > > --- > > > > V2: Add in &= operator missing from V1. Doh. > > > > --- > > .../thermal/intel/int340x_thermal/processor_thermal_device.c | 4 > > ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git > > a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > index 6f6ac6a8e82d..97333fc4be42 100644 > > --- > > a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > +++ > > b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > @@ -163,8 +163,8 @@ static int tcc_offset_update(int tcc) > > if (err) > > return err; > > > > - val = ~GENMASK_ULL(31, 24); > > - val = (tcc & 0xff) << 24; > > + val &= ~GENMASK_ULL(31, 24); > > + val |= (tcc & 0xff) << 24; > > > > err = wrmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, val); > > if (err) > >
WARNING: multiple messages have this Message-ID (diff)
From: Zhang Rui <rui.zhang@intel.com> To: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>, Colin King <colin.king@canonical.com>, Eduardo Valentin <edubezval@gmail.com>, Daniel Lezcano <daniel.lezcano@linaro.org>, linux-pm@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH][V2] drivers: thermal: processor_thermal_device: fix missing bitwise-or operators Date: Mon, 19 Aug 2019 06:32:43 +0000 [thread overview] Message-ID: <95dce698e7790dac7178e950a6a9dde71d231cae.camel@intel.com> (raw) In-Reply-To: <42db46c33466a12221e0968e82c4c4ee17b0341d.camel@linux.intel.com> On Mon, 2019-07-29 at 14:09 -0700, Srinivas Pandruvada wrote: > On Mon, 2019-07-29 at 13:03 +0100, Colin King wrote: > > From: Colin Ian King <colin.king@canonical.com> > > > > The variable val is having the top 8 bits cleared and then the > > variable is being > > re-assinged and setting just the top 8 bits. I believe the > > intention > > was bitwise-or > > in the top 8 bits. Fix this by replacing the = operators with &> > and > > > = instead. > > > > Addresses-Coverity: ("Unused value") > > Fixes: b0c74b08517e ("drivers: thermal: processor_thermal_device: > > Export sysfs inteface for TCC offset") > > Signed-off-by: Colin Ian King <colin.king@canonical.com> > > Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com > > Hi, Colin, thanks for the fix, as b0c74b08517e ("drivers: thermal: processor_thermal_device: Export sysfs inteface for TCC offset") has not been shipped in upstream yet, I will fold this fix into the original patch directly. thanks, rui > > > --- > > > > V2: Add in &= operator missing from V1. Doh. > > > > --- > > .../thermal/intel/int340x_thermal/processor_thermal_device.c | 4 > > ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > diff --git > > a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > index 6f6ac6a8e82d..97333fc4be42 100644 > > --- > > a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > +++ > > b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c > > @@ -163,8 +163,8 @@ static int tcc_offset_update(int tcc) > > if (err) > > return err; > > > > - val = ~GENMASK_ULL(31, 24); > > - val = (tcc & 0xff) << 24; > > + val &= ~GENMASK_ULL(31, 24); > > + val |= (tcc & 0xff) << 24; > > > > err = wrmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, val); > > if (err) > >
next prev parent reply other threads:[~2019-08-19 6:32 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-29 12:03 [PATCH][V2] drivers: thermal: processor_thermal_device: fix missing bitwise-or operators Colin King 2019-07-29 12:03 ` Colin King 2019-07-29 12:34 ` walter harms 2019-07-29 12:34 ` walter harms 2019-07-29 21:09 ` Srinivas Pandruvada 2019-07-29 21:09 ` Srinivas Pandruvada 2019-08-19 6:32 ` Zhang Rui [this message] 2019-08-19 6:32 ` Zhang Rui
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