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6aa7de0591
Please do not apply this to mainline directly, instead please re-run the
coccinelle script shown below and apply its output.
For several reasons, it is desirable to use {READ,WRITE}_ONCE() in
preference to ACCESS_ONCE(), and new code is expected to use one of the
former. So far, there's been no reason to change most existing uses of
ACCESS_ONCE(), as these aren't harmful, and changing them results in
churn.
However, for some features, the read/write distinction is critical to
correct operation. To distinguish these cases, separate read/write
accessors must be used. This patch migrates (most) remaining
ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following
coccinelle script:
----
// Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and
// WRITE_ONCE()
// $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch
virtual patch
@ depends on patch @
expression E1, E2;
@@
- ACCESS_ONCE(E1) = E2
+ WRITE_ONCE(E1, E2)
@ depends on patch @
expression E;
@@
- ACCESS_ONCE(E)
+ READ_ONCE(E)
----
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: linux-arch@vger.kernel.org
Cc: mpe@ellerman.id.au
Cc: shuah@kernel.org
Cc: snitzer@redhat.com
Cc: thor.thayer@linux.intel.com
Cc: tj@kernel.org
Cc: viro@zeniv.linux.org.uk
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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|---|---|---|
| .. | ||
| 88pm80x_onkey.c | ||
| 88pm860x_onkey.c | ||
| ab8500-ponkey.c | ||
| ad714x-i2c.c | ||
| ad714x-spi.c | ||
| ad714x.c | ||
| ad714x.h | ||
| adxl34x-i2c.c | ||
| adxl34x-spi.c | ||
| adxl34x.c | ||
| adxl34x.h | ||
| apanel.c | ||
| arizona-haptics.c | ||
| ati_remote2.c | ||
| atlas_btns.c | ||
| atmel_captouch.c | ||
| axp20x-pek.c | ||
| bfin_rotary.c | ||
| bma150.c | ||
| cm109.c | ||
| cma3000_d0x_i2c.c | ||
| cma3000_d0x.c | ||
| cma3000_d0x.h | ||
| cobalt_btns.c | ||
| cpcap-pwrbutton.c | ||
| da9052_onkey.c | ||
| da9055_onkey.c | ||
| da9063_onkey.c | ||
| dm355evm_keys.c | ||
| drv260x.c | ||
| drv2665.c | ||
| drv2667.c | ||
| e3x0-button.c | ||
| gp2ap002a00f.c | ||
| gpio_decoder.c | ||
| gpio_tilt_polled.c | ||
| gpio-beeper.c | ||
| hisi_powerkey.c | ||
| hp_sdc_rtc.c | ||
| ideapad_slidebar.c | ||
| ims-pcu.c | ||
| ixp4xx-beeper.c | ||
| Kconfig | ||
| keyspan_remote.c | ||
| kxtj9.c | ||
| m68kspkr.c | ||
| Makefile | ||
| max8925_onkey.c | ||
| max8997_haptic.c | ||
| max77693-haptic.c | ||
| mc13783-pwrbutton.c | ||
| mma8450.c | ||
| palmas-pwrbutton.c | ||
| pcap_keys.c | ||
| pcf8574_keypad.c | ||
| pcf50633-input.c | ||
| pcspkr.c | ||
| pm8xxx-vibrator.c | ||
| pm8941-pwrkey.c | ||
| pmic8xxx-pwrkey.c | ||
| powermate.c | ||
| pwm-beeper.c | ||
| pwm-vibra.c | ||
| rb532_button.c | ||
| regulator-haptic.c | ||
| retu-pwrbutton.c | ||
| rk805-pwrkey.c | ||
| rotary_encoder.c | ||
| sgi_btns.c | ||
| sirfsoc-onkey.c | ||
| soc_button_array.c | ||
| sparcspkr.c | ||
| tps65218-pwrbutton.c | ||
| twl4030-pwrbutton.c | ||
| twl4030-vibra.c | ||
| twl6040-vibra.c | ||
| uinput.c | ||
| wistron_btns.c | ||
| wm831x-on.c | ||
| xen-kbdfront.c | ||
| yealink.c | ||
| yealink.h | ||