Messages in this thread Patch in this message | | | From | Jack Wang <> | Subject | [PATCH v1 06/19] usb/hcd: Fix dma_map_sg error check | Date | Fri, 19 Aug 2022 08:07:48 +0200 |
| |
dma_map_sg return 0 on error.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Alexey Sheplyakov <asheplyakov@basealt.ru> Cc: Stephen Boyd <swboyd@chromium.org> Cc: Weitao Wang <WeitaoWang-oc@zhaoxin.com> Cc: Matthias Kaehlcke <mka@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jack Wang <jinpu.wang@ionos.com> --- drivers/usb/core/hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 94b305bbd621..90dd32a24e5b 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1474,7 +1474,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, urb->sg, urb->num_sgs, dir); - if (n <= 0) + if (!n) ret = -EAGAIN; else urb->transfer_flags |= URB_DMA_MAP_SG; -- 2.34.1
| |