Revision 197234520bd83aba2199add57a9d2678ee7f9781 authored by Paul Walmsley on 26 January 2012, 02:50:56 UTC, committed by Greg Kroah-Hartman on 09 February 2012, 18:48:36 UTC
The receive FIFO wakeup latency estimate in the omap-serial driver is three orders of magnitude too small. This effectively prevents the MPU from going to a low-power state when CONFIG_CPU_IDLE=y. This is a major power management regression and masks some other FIFO-related bugs in the driver. Fix by correcting the most egregious problem in the RX wakeup latency estimate. There are several other flaws in the estimator; these will be fixed by a separate patch series intended for 3.4. The difference in low-power states with this patch can be observed via debugfs in pm_debug/count. This estimate does not have any effect when CONFIG_CPU_IDLE=n. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Alan Cox <alan@linux.intel.com> Acked-by: Govindraj.R <govindraj.raja@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Tested-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| File | Mode | Size |
|---|---|---|
| apparmor | ||
| integrity | ||
| keys | ||
| selinux | ||
| smack | ||
| tomoyo | ||
| Kconfig | -rw-r--r-- | 7.9 KB |
| Makefile | -rw-r--r-- | 941 bytes |
| capability.c | -rw-r--r-- | 23.2 KB |
| commoncap.c | -rw-r--r-- | 27.1 KB |
| device_cgroup.c | -rw-r--r-- | 11.5 KB |
| inode.c | -rw-r--r-- | 6.7 KB |
| lsm_audit.c | -rw-r--r-- | 9.0 KB |
| min_addr.c | -rw-r--r-- | 1.3 KB |
| security.c | -rw-r--r-- | 33.1 KB |
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