| commit | c6c352371c1ce486a62f4eb92e545b05cfcef76b | [log] [tgz] |
|---|---|---|
| author | Harro Haan <hrhaan@gmail.com> | Mon Mar 01 17:38:37 2010 +0100 |
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | Mon Mar 29 17:36:04 2010 +0100 |
| tree | 23720c8ff4d431c809d670759bf10f43f78f60ff | |
| parent | fd522a8dec11a08b5fdd23982193808e268be19e [diff] |
ARM: 5965/1: Fix soft lockup in at91 udc driver Fix a potential soft lockup in the AT91 UDC driver by ensuring that the UDC clock is enabled inside the interrupt handler. If the UDC clock is not enabled then the UDC registers cannot be written to and the interrupt cannot be cleared or masked. Note that this patch (and other parts of the existing AT91 UDC driver) is potentially racy for preempt-rt kernels, but is okay for mainline. For more info see: http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100203/09cdb3b4/attachment.el http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100203/8443a1e4/attachment.el Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Acked-by: Harro Haan <hrhaan@gmail.com> Tested-by: Remy Bohmer <linux@bohmer.net> Acked-by: Andrew Victor <avictor.za@gmail.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>