diff options
Diffstat (limited to 'recipes/kexecboot/linux-kexecboot-2.6.29/musb/0012-musb-fix-possible-panic-while-resuming.patch')
| -rw-r--r-- | recipes/kexecboot/linux-kexecboot-2.6.29/musb/0012-musb-fix-possible-panic-while-resuming.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/recipes/kexecboot/linux-kexecboot-2.6.29/musb/0012-musb-fix-possible-panic-while-resuming.patch b/recipes/kexecboot/linux-kexecboot-2.6.29/musb/0012-musb-fix-possible-panic-while-resuming.patch new file mode 100644 index 0000000000..2bbde84c16 --- /dev/null +++ b/recipes/kexecboot/linux-kexecboot-2.6.29/musb/0012-musb-fix-possible-panic-while-resuming.patch @@ -0,0 +1,56 @@ +From b9a61b80ea89d9d6d78a23d96a28df94fd612298 Mon Sep 17 00:00:00 2001 +From: Kim Kyuwon <q1.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> +Date: Thu, 26 Mar 2009 18:56:51 -0700 +Subject: [PATCH] musb: fix possible panic while resuming + +During driver resume processing, musb could cause a kernel panic. +Fix by enabling the clock earlier, with the resume_early method. + +Signed-off-by: Kim Kyuwon <q1.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> +Signed-off-by: David Brownell <dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org> +--- + drivers/usb/musb/musb_core.c | 8 ++------ + 1 files changed, 2 insertions(+), 6 deletions(-) + +diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c +index 338cd16..3019725 100644 +--- a/drivers/usb/musb/musb_core.c ++++ b/drivers/usb/musb/musb_core.c +@@ -2170,16 +2170,13 @@ static int musb_suspend(struct platform_device *pdev, pm_message_t message) + return 0; + } + +-static int musb_resume(struct platform_device *pdev) ++static int musb_resume_early(struct platform_device *pdev) + { +- unsigned long flags; + struct musb *musb = dev_to_musb(&pdev->dev); + + if (!musb->clock) + return 0; + +- spin_lock_irqsave(&musb->lock, flags); +- + if (musb->set_clock) + musb->set_clock(musb->clock, 1); + else +@@ -2189,7 +2186,6 @@ static int musb_resume(struct platform_device *pdev) + * unless for some reason the whole soc powered down and we're + * not treating that as a whole-system restart (e.g. swsusp) + */ +- spin_unlock_irqrestore(&musb->lock, flags); + return 0; + } + +@@ -2207,7 +2203,7 @@ static struct platform_driver musb_driver = { + .remove = __devexit_p(musb_remove), + .shutdown = musb_shutdown, + .suspend = musb_suspend, +- .resume = musb_resume, ++ .resume_early = musb_resume_early, + }; + + /*-------------------------------------------------------------------------*/ +-- +1.6.0.4 + |