From: Ravi Bangoria Date: Thu, 14 May 2020 11:17:33 +0000 (+0530) Subject: powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable X-Git-Tag: v5.10.7~2436^2~111 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=22a214e461c5cc9428b86915d9cfcf84c6e11ad7;p=platform%2Fkernel%2Flinux-rpi.git powerpc/watchpoint: Disable all available watchpoints when !dawr_force_enable Instead of disabling only first watchpoint, disable all available watchpoints while clearing dawr_force_enable. Callback function is used only for disabling watchpoint, rename it to disable_dawrs_cb(). And null_brk parameter is not really required while disabling watchpoint, remove it. Signed-off-by: Ravi Bangoria Signed-off-by: Michael Ellerman Reviewed-by: Michael Neuling Link: https://lore.kernel.org/r/20200514111741.97993-9-ravi.bangoria@linux.ibm.com --- diff --git a/arch/powerpc/kernel/dawr.c b/arch/powerpc/kernel/dawr.c index 8114ad3..500f52f 100644 --- a/arch/powerpc/kernel/dawr.c +++ b/arch/powerpc/kernel/dawr.c @@ -50,9 +50,13 @@ int set_dawr(int nr, struct arch_hw_breakpoint *brk) return 0; } -static void set_dawr_cb(void *info) +static void disable_dawrs_cb(void *info) { - set_dawr(0, info); + struct arch_hw_breakpoint null_brk = {0}; + int i; + + for (i = 0; i < nr_wp_slots(); i++) + set_dawr(i, &null_brk); } static ssize_t dawr_write_file_bool(struct file *file, @@ -74,7 +78,7 @@ static ssize_t dawr_write_file_bool(struct file *file, /* If we are clearing, make sure all CPUs have the DAWR cleared */ if (!dawr_force_enable) - smp_call_function(set_dawr_cb, &null_brk, 0); + smp_call_function(disable_dawrs_cb, NULL, 0); return rc; }