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path: root/drivers/block/ub.c
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Diffstat (limited to 'drivers/block/ub.c')
-rw-r--r--drivers/block/ub.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 5c6a6e89d2fb..e2c3ebd8db22 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -319,6 +319,7 @@ struct ub_dev {
int openc; /* protected by ub_lock! */
/* kref is too implicit for our taste */
int reset; /* Reset is running */
+ int bad_resid;
unsigned int tagcnt;
char name[12];
struct usb_device *dev;
@@ -1265,14 +1266,19 @@ static void ub_scsi_urb_compl(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
return;
}
- len = le32_to_cpu(bcs->Residue);
- if (len != cmd->len - cmd->act_len) {
- /*
- * It is all right to transfer less, the caller has
- * to check. But it's not all right if the device
- * counts disagree with our counts.
- */
- goto Bad_End;
+ if (!sc->bad_resid) {
+ len = le32_to_cpu(bcs->Residue);
+ if (len != cmd->len - cmd->act_len) {
+ /*
+ * Only start ignoring if this cmd ended well.
+ */
+ if (cmd->len == cmd->act_len) {
+ printk(KERN_NOTICE "%s: "
+ "bad residual %d of %d, ignoring\n",
+ sc->name, len, cmd->len);
+ sc->bad_resid = 1;
+ }
+ }
}
switch (bcs->Status) {