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sh: check return code of request_irq

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[ Upstream commit 0e38225c92c7964482a8bb6b3e37fde4319e965c ]

request_irq is marked __must_check, but the call in shx3_prepare_cpus
has a void return type, so it can't propagate failure to the caller.
Follow cues from hexagon and just print an error.

Fixes: c7936b9abc ("sh: smp: Hook in to the generic IPI handler for SH-X3 SMP.")
Cc: Miguel Ojeda <[email protected]>
Cc: Paul Mundt <[email protected]>
Reported-by: Guenter Roeck <[email protected]>
Signed-off-by: Nick Desaulniers <[email protected]>
Tested-by: John Paul Adrian Glaubitz <[email protected]>
Reviewed-by: Miguel Ojeda <[email protected]>
Signed-off-by: Rich Felker <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Nick Desaulniers 2020-12-22 12:54:01 -08:00 • committed by Greg Kroah-Hartman
commit 9823ba8f17
1 changed files with 3 additions and 2 deletions
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5
arch/sh/kernel/cpu/sh4a/smp-shx3.c
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@ -73,8 +73,9 @@ static void shx3_prepare_cpus(unsigned int max_cpus)
BUILD_BUG_ON(SMP_MSG_NR >= 8);
for (i = 0; i < SMP_MSG_NR; i++)
request_irq(104 + i, ipi_interrupt_handler,
IRQF_PERCPU, "IPI", (void *)(long)i);
if (request_irq(104 + i, ipi_interrupt_handler,
IRQF_PERCPU, "IPI", (void *)(long)i))
pr_err("Failed to request irq %d\n", i);
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);