Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=08cbc706acd2dd601b0663e28fa97ffb0564e105 Commit: 08cbc706acd2dd601b0663e28fa97ffb0564e105 Parent: 442258e2ff69276ff767f3703b30ce6a31fdd181 Author: Nicolas Ferre <[EMAIL PROTECTED]> AuthorDate: Thu Dec 13 15:52:58 2007 -0800 Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]> CommitDate: Mon Dec 17 10:47:15 2007 -0800
USB: at91_udc: correct hanging while disconnecting usb cable Correct hanging while disconnecting the USB device cable. Prevent a race between vbus and UDP interrupts. This bug was tracked on at91sam9260ek boards. A usb resume interrupt was firing after the vbus interrupt : the IP was then already stoped and not able to deal with it (no more clock). A simple interrupt disabling is ok as the "end of bus reset" irq is non maskable and ok to resume the USB device IP. Signed-off-by: Nicolas Ferre <[EMAIL PROTECTED]> Acked-by: David Brownell <[EMAIL PROTECTED]> Signed-off-by: Andrew Morton <[EMAIL PROTECTED]> Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]> --- drivers/usb/gadget/at91_udc.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index a6adf7e..cd62b02 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -887,6 +887,7 @@ static void pullup(struct at91_udc *udc, int is_on) if (is_on) { clk_on(udc); + at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_RXRSM); at91_udp_write(udc, AT91_UDP_TXVC, 0); if (cpu_is_at91rm9200()) at91_set_gpio_value(udc->board.pullup_pin, 1); @@ -904,6 +905,7 @@ static void pullup(struct at91_udc *udc, int is_on) } } else { stop_activity(udc); + at91_udp_write(udc, AT91_UDP_IDR, AT91_UDP_RXRSM); at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); if (cpu_is_at91rm9200()) at91_set_gpio_value(udc->board.pullup_pin, 0); - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html