diff options
| author | Xie Shaowen <studentxswpy@163.com> | 2022-08-02 15:41:48 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-07 12:07:28 +0100 |
| commit | aaf59a444bfed08518da435dfd203ebb07e6d1d2 (patch) | |
| tree | acbb1f29ea3773b061c420e32e1909593f3ece35 | |
| parent | 3a866ff6fc2232c8e393cdb55ffb8ce947349e03 (diff) | |
macintosh/macio-adb: check the return value of ioremap()
[ Upstream commit dbaa3105736d4d73063ea0a3b01cd7fafce924e6 ]
The function ioremap() in macio_init() can fail, so its return value
should be checked.
Fixes: 36874579dbf4c ("[PATCH] powerpc: macio-adb build fix")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Signed-off-by: Xie Shaowen <studentxswpy@163.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220802074148.3213659-1-studentxswpy@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/macintosh/macio-adb.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c index 87de8d9bcfad..e620c50768cd 100644 --- a/drivers/macintosh/macio-adb.c +++ b/drivers/macintosh/macio-adb.c @@ -106,6 +106,10 @@ int macio_init(void) return -ENXIO; } adb = ioremap(r.start, sizeof(struct adb_regs)); + if (!adb) { + of_node_put(adbs); + return -ENOMEM; + } out_8(&adb->ctrl.r, 0); out_8(&adb->intr.r, 0); |