The patch titled Subject: thermal/spear_thermal: replace readl/writel with lighter _relaxed variants has been added to the -mm tree. Its filename is thermal-spear_thermal-replace-readl-writel-with-lighter-_relaxed-variants.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Viresh Kumar <viresh.kumar@xxxxxx> Subject: thermal/spear_thermal: replace readl/writel with lighter _relaxed variants readl/writel versions for ARM contain memory barrier instruction for synchronizing DMA buffers. These are not required at least on this module. So use lighter _relaxed variants. Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxx> Cc: Len Brown <lenb@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/thermal/spear_thermal.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff -puN drivers/thermal/spear_thermal.c~thermal-spear_thermal-replace-readl-writel-with-lighter-_relaxed-variants drivers/thermal/spear_thermal.c --- a/drivers/thermal/spear_thermal.c~thermal-spear_thermal-replace-readl-writel-with-lighter-_relaxed-variants +++ a/drivers/thermal/spear_thermal.c @@ -46,7 +46,7 @@ static inline int thermal_get_temp(struc * Data are ready to be read after 628 usec from POWERDOWN signal * (PDN) = 1 */ - *temp = (readl(stdev->thermal_base) & 0x7F) * MD_FACTOR; + *temp = (readl_relaxed(stdev->thermal_base) & 0x7F) * MD_FACTOR; return 0; } @@ -63,8 +63,8 @@ static int spear_thermal_suspend(struct unsigned int actual_mask = 0; /* Disable SPEAr Thermal Sensor */ - actual_mask = readl(stdev->thermal_base); - writel(actual_mask & ~stdev->flags, stdev->thermal_base); + actual_mask = readl_relaxed(stdev->thermal_base); + writel_relaxed(actual_mask & ~stdev->flags, stdev->thermal_base); clk_disable(stdev->clk); dev_info(dev, "Suspended.\n"); @@ -87,8 +87,8 @@ static int spear_thermal_resume(struct d } /* Enable SPEAr Thermal Sensor */ - actual_mask = readl(stdev->thermal_base); - writel(actual_mask | stdev->flags, stdev->thermal_base); + actual_mask = readl_relaxed(stdev->thermal_base); + writel_relaxed(actual_mask | stdev->flags, stdev->thermal_base); dev_info(dev, "Resumed.\n"); @@ -145,7 +145,7 @@ static int spear_thermal_probe(struct pl } stdev->flags = pdata->thermal_flags; - writel(stdev->flags, stdev->thermal_base); + writel_relaxed(stdev->flags, stdev->thermal_base); spear_thermal = thermal_zone_device_register("spear_thermal", 0, stdev, &ops, 0, 0, 0, 0); @@ -180,8 +180,8 @@ static int spear_thermal_exit(struct pla platform_set_drvdata(pdev, NULL); /* Disable SPEAr Thermal Sensor */ - actual_mask = readl(stdev->thermal_base); - writel(actual_mask & ~stdev->flags, stdev->thermal_base); + actual_mask = readl_relaxed(stdev->thermal_base); + writel_relaxed(actual_mask & ~stdev->flags, stdev->thermal_base); clk_disable(stdev->clk); clk_put(stdev->clk); _ Subject: Subject: thermal/spear_thermal: replace readl/writel with lighter _relaxed variants Patches currently in -mm which might be from viresh.kumar@xxxxxx are linux-next.patch thermal-add-support-for-thermal-sensor-present-on-spear13xx-machines.patch thermal-add-support-for-thermal-sensor-present-on-spear13xx-machines-fix.patch thermal-add-support-for-thermal-sensor-present-on-spear13xx-machines-fix-fix.patch thermal-add-support-for-thermal-sensor-present-on-spear13xx-machines-add-compilation-dependency-on-plat_spear.patch thermal-spear_thermal-replace-readl-writel-with-lighter-_relaxed-variants.patch rtc-spear-fix-for-balancing-the-enable_irq_wake-in-power-mgmt.patch rtc-spear-fix-for-rtc_aie_on-and-rtc_aie_off-ioctl-errors.patch rtc-rtc-spear-call-platform_set_drvdata-before-registering-rtc-device.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html