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authorPaul Burton <paul.burton@imgtec.com>2017-08-12 19:49:40 -0700
committerRalf Baechle <ralf@linux-mips.org>2017-08-30 00:57:27 +0200
commitd595d423d06071bd7a4892c3c2f16bfe1d5b3a85 (patch)
treebabe4bf15082b7528e8c316dc0ec8630b0e24df9 /arch/mips/cavium-octeon/smp.c
parentMIPS: CM: Add cluster & block args to mips_cm_lock_other() (diff)
downloadlinux-dev-d595d423d06071bd7a4892c3c2f16bfe1d5b3a85.tar.xz
linux-dev-d595d423d06071bd7a4892c3c2f16bfe1d5b3a85.zip
MIPS: SMP: Allow boot_secondary SMP op to return errors
Allow the boot_secondary SMP op to return an error to __cpu_up(), which will in turn return it to its caller. This will allow SMP implementations to return errors quickly in cases they they know have failed, rather than relying upon __cpu_up() eventually timing out waiting for the cpu_running completion. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/17014/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/cavium-octeon/smp.c')
-rw-r--r--arch/mips/cavium-octeon/smp.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 163663a5363d..75e7c8625659 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -205,7 +205,7 @@ int plat_post_relocation(long offset)
* Firmware CPU startup hook
*
*/
-static void octeon_boot_secondary(int cpu, struct task_struct *idle)
+static int octeon_boot_secondary(int cpu, struct task_struct *idle)
{
int count;
@@ -223,8 +223,12 @@ static void octeon_boot_secondary(int cpu, struct task_struct *idle)
udelay(1);
count--;
}
- if (count == 0)
+ if (count == 0) {
pr_err("Secondary boot timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
}
/**