diff options
| author |   Bjørn Mork <bjorn@mork.no> | 2012-10-07 19:31:23 +0200 |
|---|---|---|
| committer | Bjørn Mork <bjorn@mork.no> | 2012-10-18 22:39:40 +0200 |
| commit | 01675d52ee91a35369621b4aad095354243ab696 (patch) | |
| tree | 547336da48f4075ac387b1922fe9b3c02f4a9360 | |
| parent | 73f740cd5a3b6e999be4df9a7d6d78baa0033486 (diff) | |
net: cdc_ncm: use device rx_max value if update failed
If the device refuses our updated value, then we must be prepared
to receive URBs as big as the device wants to send. Set rx_max
to the device provided value on error.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
| -rw-r--r-- | drivers/net/usb/cdc_ncm.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 4cd582a4f62..6a65662aa9d 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -251,8 +251,11 @@ static u8 cdc_ncm_setup(struct cdc_ncm_ctx *ctx) kfree(dwNtbInMaxSize); } size_err: - if (err < 0) - pr_debug("Setting NTB Input Size failed\n"); + if (err < 0) { + /* failed, so attempt to use the device suggested size */ + ctx->rx_max = le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize); + pr_debug("Setting NTB Input Size failed, reverting to %u\n", ctx->rx_max); + } } /* verify maximum size of transmitted NTB in bytes */ |