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| author | Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2016-12-12 16:40:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-12 18:55:06 -0800 |
| commit | 4170a20f21e734b14317a65baaccc4078eef5198 (patch) | |
| tree | b8a6c47d5431016782c8304e57ac11e4c4e5c150 /drivers/pcmcia | |
| parent | 17e96230d95cc2b7eb7d039415d3506340257b5e (diff) | |
| download | lwn-4170a20f21e734b14317a65baaccc4078eef5198.tar.gz lwn-4170a20f21e734b14317a65baaccc4078eef5198.zip | |
drivers/pcmcia/m32r_pcc.c: check return from request_irq
While building m32r allmodconfig we were getting warning:
drivers/pcmcia/m32r_pcc.c:331:2: warning: ignoring return value of 'request_irq', declared with attribute warn_unused_result
request_irq() can fail and we should always be checking the result from
it. Check the result and return it to the caller.
Link: http://lkml.kernel.org/r/1474237304-897-1-git-send-email-sudipm.mukherjee@gmail.com
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pcmcia')
| -rw-r--r-- | drivers/pcmcia/m32r_pcc.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c index eb126b98ed8a..fad4455665eb 100644 --- a/drivers/pcmcia/m32r_pcc.c +++ b/drivers/pcmcia/m32r_pcc.c @@ -296,10 +296,11 @@ static int __init is_alive(u_short sock) return 0; } -static void add_pcc_socket(ulong base, int irq, ulong mapaddr, - unsigned int ioaddr) +static int add_pcc_socket(ulong base, int irq, ulong mapaddr, + unsigned int ioaddr) { pcc_socket_t *t = &socket[pcc_sockets]; + int err; /* add sockets */ t->ioaddr = ioaddr; @@ -328,11 +329,16 @@ static void add_pcc_socket(ulong base, int irq, ulong mapaddr, t->socket.irq_mask = 0; t->socket.pci_irq = 2 + pcc_sockets; /* XXX */ - request_irq(irq, pcc_interrupt, 0, "m32r-pcc", pcc_interrupt); + err = request_irq(irq, pcc_interrupt, 0, "m32r-pcc", pcc_interrupt); + if (err) { + if (t->base > 0) + release_region(t->base, 0x20); + return err; + } pcc_sockets++; - return; + return 0; } |