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authorIngo Molnar <mingo@kernel.org>2013-12-17 15:27:08 +0100
committerIngo Molnar <mingo@kernel.org>2013-12-17 15:27:08 +0100
commitbb799d3b980eb803ca2da4a4eefbd9308f8d988a (patch)
tree69fbe0cd6d47b23a50f5e1d87bf7489532fae149 /include/linux/usb.h
parent919fc6e34831d1c2b58bfb5ae261dc3facc9b269 (diff)
parent319e2e3f63c348a9b66db4667efa73178e18b17d (diff)
Merge tag 'v3.13-rc4' into core/locking
Merge Linux 3.13-rc4, to refresh this rather old tree with the latest fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 7454865ad148..512ab162832c 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1264,6 +1264,8 @@ typedef void (*usb_complete_t)(struct urb *);
* @sg: scatter gather buffer list, the buffer size of each element in
* the list (except the last) must be divisible by the endpoint's
* max packet size if no_sg_constraint isn't set in 'struct usb_bus'
+ * (FIXME: scatter-gather under xHCI is broken for periodic transfers.
+ * Do not use urb->sg for interrupt endpoints for now, only bulk.)
* @num_mapped_sgs: (internal) number of mapped sg entries
* @num_sgs: number of entries in the sg list
* @transfer_buffer_length: How big is transfer_buffer. The transfer may