diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-11-25 14:41:20 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-29 08:56:09 +0100 |
| commit | 3c347cdafa3db43337870006e5c2d7b78a8dae20 (patch) | |
| tree | 95d90abacfdfa56a53171708b3f741836142cd63 | |
| parent | 57b7b733b1a7aeab25bc2670afff608214284863 (diff) | |
usb: core: hcd: Fix return value check in usb_hcd_setup_local_mem()
If dmam_alloc_attrs() fails, it returns NULL pointer and never
return ERR_PTR(), so repleace IS_ERR() with IS_ERR_OR_NULL()
and if it's NULL, returns -ENOMEM.
Fixes: 9ba26f5cecd8 ("ARM: sa1100/assabet: move dmabounce hack to ohci driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221125064120.2842452-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/core/hcd.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index faeaace0d197..8300baedafd2 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -3133,8 +3133,12 @@ int usb_hcd_setup_local_mem(struct usb_hcd *hcd, phys_addr_t phys_addr, GFP_KERNEL, DMA_ATTR_WRITE_COMBINE); - if (IS_ERR(local_mem)) + if (IS_ERR_OR_NULL(local_mem)) { + if (!local_mem) + return -ENOMEM; + return PTR_ERR(local_mem); + } /* * Here we pass a dma_addr_t but the arg type is a phys_addr_t. |