[PATCH 5/8] OMAP4: PM: TEMP: Prevent l3init from idling/force sleep
Russell King - ARM Linux
linux at arm.linux.org.uk
Thu Jun 23 11:22:49 EDT 2011
On Thu, Jun 23, 2011 at 09:04:20AM -0600, Paul Walmsley wrote:
> Since this is basically a hack to work around limitations of the current
> MMC driver, if we accept something like this, I think it should come with
> a big warning message and comment. Something like this in
> omap44xx_clockdomains_init():
>
> /*
> * XXX The OMAP L3 interconnect hardware is able to enter
> * hardware-supervised idle. But because the OMAP HSMMC
> * driver still hasn't been converted to use runtime PM, if
> * the L3 is allowed to enter hwsup idle, the kernel will
> * crash. Once the MMC driver is fixed (which patches have
> * been posted to do, with subject line "OMAP: HSMMC: cleanup
> * and runtime pm") the change to the l3_init_44xx_clkdm
> * flags should be dropped. It limits the low-power state that
> * the chip can enter.
> */
> pr_warn("WARNING: OMAP4 low power states artificially limited, due
> to unconverted HSMMC driver\n");
Do you really want to continue pissing Linus off with churn like this
rather than pressing to get problems fixed _properly_ (eg, getting the
HSMMC driver fixed) ?
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