]> git.baikalelectronics.ru Git - kernel.git/commit
xhci: Fix false warning message about wrong bounce buffer write length
authorMathias Nyman <mathias.nyman@linux.intel.com>
Fri, 4 Oct 2019 11:59:26 +0000 (14:59 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 4 Oct 2019 12:32:10 +0000 (14:32 +0200)
commit0e2e62813d82b5ad2e4b2149479798dec20b25ae
tree4e9a02858d13038731541356fbefd6da4a5acdae
parentb7b925bbc6ea6642625f1cae2e29701d06e4cea2
xhci: Fix false warning message about wrong bounce buffer write length

The check printing out the "WARN Wrong bounce buffer write length:"
uses incorrect values when comparing bytes written from scatterlist
to bounce buffer. Actual copied lengths are fine.

The used seg->bounce_len will be set to equal new_buf_len a few lines later
in the code, but is incorrect when doing the comparison.

The patch which added this false warning was backported to 4.8+ kernels
so this should be backported as far as well.

Cc: <stable@vger.kernel.org> # v4.8+
Fixes: 3c88fd94c89a ("xhci: update bounce buffer with correct sg num")
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1570190373-30684-2-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci-ring.c