diff options
| author | Anand Gadiyar <gadiyar@ti.com> | 2009-12-28 13:40:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:53:42 -0800 |
| commit | f933a0c0fe0ea5f49a35bcd45e3e4850e0606cba (patch) | |
| tree | 9a8052f7fd2119bd76f7cd94c6db5ae7324c21cd /virt/kvm | |
| parent | 452f0394376d2cc882e4c4a593fc290c042799a9 (diff) | |
usb: musb: workaround MUSB DMA_INTR sometimes reads zero
MUSB DMA_INTR register may sometimes read zero when infact there
was a pending interrupt. Workaround this by reading the DMA_COUNT
values for all enabled channels when this condition occurs.
Flag these channels as the ones needing to be serviced.
Additionally, the absence of a debug print meant we would never
catch a spurious DMA interrupt in MUSB. So this patch adds a
debug print in the IRQ handler.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Cc: Ajay Kumar Gupta <ajay.gupta@ti.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions