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author | Geoff Levand <geoffrey.levand@am.sony.com> | 2008-08-22 14:13:00 -0700 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-09-23 13:58:06 -0700 |
commit | 83a798207361cc26385187b2e71efa2b5d75de7f (patch) | |
tree | eb2fa06d818abf43b18c9f3ccc7c12acbf62bb3b /Documentation | |
parent | f8834f1febb8f56cdcfeb35485e0cc7a8d547818 (diff) |
USB: fix hcd interrupt disabling
Commit de85422b94ddb23c021126815ea49414047c13dc, 'USB: fix interrupt
disabling for HCDs with shared interrupt handlers' changed usb_add_hcd()
to strip IRQF_DISABLED from irqflags prior to calling request_irq()
with the justification that such a removal was necessary for shared
interrupts to work properly. Unfortunately, the change in that commit
unconditionally removes the IRQF_DISABLED flag, causing problems on
platforms that don't use a shared interrupt but require IRQF_DISABLED.
This change adds a check for IRQF_SHARED prior to removing the
IRQF_DISABLED flag.
Fixes the PS3 system startup hang reported with recent Fedora and
OpenSUSE kernels.
Note that this problem is hidden when CONFIG_LOCKDEP=y (ps3_defconfig),
as local_irq_enable_in_hardirq() is defined as a null statement for
that config.
CC: stable <stable@kernel.org>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Stefan Becker <Stefan.Becker@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions