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| author | Bo Shen <[email protected]> | 2014-12-17 09:18:49 +0000 |
|---|---|---|
| committer | Felipe Balbi <[email protected]> | 2014-12-22 16:41:15 +0000 |
| commit | 6785a1034461c2d2c205215f63a50a740896e55b (patch) | |
| tree | ce268162cac862c48ce60b1d7ac2b963efadaaa9 /drivers/usb/phy/phy.c | |
| parent | usb: gadget: udc: atmel: change setting for DMA (diff) | |
| download | kernel-6785a1034461c2d2c205215f63a50a740896e55b.tar.gz kernel-6785a1034461c2d2c205215f63a50a740896e55b.zip | |
usb: gadget: udc: atmel: fix possible IN hang issue
When receive data, the RXRDY in status register set by hardware
after a new packet has been stored in the endpoint FIFO. When it
is copied from FIFO, this bit is cleared which make the FIFO can
be accessed again.
In the receive_data() function, this bit RXRDY has been cleared.
So, after the receive_data() function return, this bit should
not be cleared again, or else it may cause the accessing FIFO
corrupt, which will make the data loss.
Fixes: 914a3f3b3754 (USB: add atmel_usba_udc driver)
Cc: <[email protected]> # 2.6.24+
Acked-by: Nicolas Ferre <[email protected]>
Signed-off-by: Bo Shen <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
Diffstat (limited to 'drivers/usb/phy/phy.c')
0 files changed, 0 insertions, 0 deletions