diff options
| author | Xie Shaowen <studentxswpy@163.com> | 2022-08-02 15:41:48 +0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-11-24 23:12:18 +1100 |
| commit | dbaa3105736d4d73063ea0a3b01cd7fafce924e6 (patch) | |
| tree | 0f902dad8a416665b3c614024dfdd7343d47b2cc | |
| parent | 5ca86eae55a2f006e6c1edd2029b2cacb6979515 (diff) | |
macintosh/macio-adb: check the return value of ioremap()
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
| -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 3721402582b4..55a9f8c3a150 100644 --- a/drivers/macintosh/macio-adb.c +++ b/drivers/macintosh/macio-adb.c @@ -108,6 +108,10 @@ 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); |