Sorry for taking so long to get back to you guys about this (the 3.19-rc series has been
problematic for me in a couple of areas, so I'd let it go for a while):
On Mon, 5 Jan 2015, Alan Stern wrote:
> The patch I posted sets a general limit of 32 MB for USB drives that
> don't have a quirk flag for a smaller limit.
> Kenneth, have you tried that patch? Does it fix your problem?
No, it fails in the same way (applied to 3.19-rc5):
----
Jan 19 01:38:16 tosh-p75a kernel: [ 268.606258] sd 5:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Jan 19 01:38:16 tosh-p75a kernel: [ 268.606262] sd 5:0:0:0: [sdc] CDB:
Jan 19 01:38:16 tosh-p75a kernel: [ 268.606263] Write(10): 2a 00 0f e8 e0 40 00 3c 00 00
Jan 19 01:38:16 tosh-p75a kernel: [ 268.606268] blk_update_request: I/O error, dev sdc, sector 2135360000
Jan 19 01:38:16 tosh-p75a kernel: [ 268.839597] sd 5:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Jan 19 01:38:16 tosh-p75a kernel: [ 268.839603] sd 5:0:0:0: [sdc] CDB:
Jan 19 01:38:16 tosh-p75a kernel: [ 268.839605] Write(10): 2a 00 0f e9 68 40 00 3c 00 00
Jan 19 01:38:16 tosh-p75a kernel: [ 268.839615] blk_update_request: I/O error, dev sdc, sector 2135638528
<snip>
Jan 19 01:38:47 tosh-p75a kernel: [ 300.103494] usb 2-4.2: reset SuperSpeed USB device number 3 using xhci_hcd
Jan 19 01:38:47 tosh-p75a kernel: [ 300.115145] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880448c9bf00
Jan 19 01:38:47 tosh-p75a kernel: [ 300.115150] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff880448c9bf48
Jan 19 01:38:48 tosh-p75a kernel: [ 300.443729] INFO: task kworker/u16:6:197 blocked for more than 30 seconds.
----
FWIW, my quick fix gets me going again:
----
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 6ed2cbe..3a10bf6 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -257,7 +257,8 @@ void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_
__func__, max_hw_sectors);
}
- limits->max_sectors = limits->max_hw_sectors = max_hw_sectors;
+ limits->max_sectors = limits->max_hw_sectors =
+ min_t(unsigned int, max_hw_sectors, 65535);
}
EXPORT_SYMBOL(blk_limits_max_hw_sectors);
----
-Kenny
--
Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Silicon Valley
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