diff options
| author |   Jack Wang <jinpu.wang@ionos.com> | 2022-08-19 08:07:48 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-19 11:10:23 +0200 |
| commit | 4dce3b375179fdd4aba2191be11ace90ef0ec6d6 (patch) | |
| tree | 3f88c73333ca40c7a13934b45b0d6dbd725cb87b /drivers/usb/core | |
| parent | usb: gadget: tegra: Reduce pad power (diff) | |
| download | linux-dev-4dce3b375179fdd4aba2191be11ace90ef0ec6d6.tar.xz linux-dev-4dce3b375179fdd4aba2191be11ace90ef0ec6d6.zip | |
usb/hcd: Fix dma_map_sg error check
dma_map_sg return 0 on error.
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>
Link: https://lore.kernel.org/r/20220819060801.10443-7-jinpu.wang@ionos.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hcd.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |