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| author | Anna-Maria Gleixner <anna-maria@linutronix.de> | 2016-05-02 11:00:49 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-05-13 14:02:17 +0200 |
| commit | 015aa05f534adabff2e4380f5ae6ea0fe20ec321 (patch) | |
| tree | 7f33055727cea1703a9cd80a70a1798df11a3e23 /drivers/bus | |
| parent | e8b5325ca3d01c512be6f04d587869a01e0ea59f (diff) | |
| download | linux-rt-015aa05f534adabff2e4380f5ae6ea0fe20ec321.tar.gz | |
MIPS: Remove no longer needed work_on_cpu() call
Since commit 3b9d6da67e11 ("cpu/hotplug: Fix rollback during error-out
in __cpu_disable()") it is ensured that callbacks of CPU_ONLINE and
CPU_DOWN_PREPARE are processed on the hotplugged CPU. Due to this
work_on_cpu() calls are no longer required.
Replace work_on_cpu() with a direct call of mips_cdmm_bus_up() or
mips_cdmm_bus_down(). Description of those functions are adapted.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: rt@linutronix.de
Patchwork: https://patchwork.linux-mips.org/patch/13197/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/bus')
| -rw-r--r-- | drivers/bus/mips_cdmm.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/bus/mips_cdmm.c b/drivers/bus/mips_cdmm.c index 1c543effe062..cad49bc38b3e 100644 --- a/drivers/bus/mips_cdmm.c +++ b/drivers/bus/mips_cdmm.c @@ -599,8 +599,8 @@ BUILD_PERDEV_HELPER(cpu_up) /* int mips_cdmm_cpu_up_helper(...) */ * mips_cdmm_bus_down() - Tear down the CDMM bus. * @data: Pointer to unsigned int CPU number. * - * This work_on_cpu callback function is executed on a given CPU to call the - * CDMM driver cpu_down callback for all devices on that CPU. + * This function is executed on the hotplugged CPU and calls the CDMM + * driver cpu_down callback for all devices on that CPU. */ static long mips_cdmm_bus_down(void *data) { @@ -630,7 +630,9 @@ static long mips_cdmm_bus_down(void *data) * CDMM devices on that CPU, or to call the CDMM driver cpu_up callback for all * devices already discovered on that CPU. * - * It is used during initialisation and when CPUs are brought online. + * It is used as work_on_cpu callback function during + * initialisation. When CPUs are brought online the function is + * invoked directly on the hotplugged CPU. */ static long mips_cdmm_bus_up(void *data) { @@ -677,10 +679,10 @@ static int mips_cdmm_cpu_notify(struct notifier_block *nb, switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: case CPU_DOWN_FAILED: - work_on_cpu(cpu, mips_cdmm_bus_up, &cpu); + mips_cdmm_bus_up(&cpu); break; case CPU_DOWN_PREPARE: - work_on_cpu(cpu, mips_cdmm_bus_down, &cpu); + mips_cdmm_bus_down(&cpu); break; default: return NOTIFY_DONE; |