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
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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
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