[PATCHv3 3/2] ARM: msm: Drop useless teq from DEBUG_LL support
nico at fluxnic.net
Mon Dec 5 13:40:23 EST 2011
On Mon, 5 Dec 2011, Stephen Boyd wrote:
> This teq was first introduced in bcc0f6a ([ARM] msm: clean up
> iomap and devices, 2008-09-10). It seems that DEBUG_LL support on
> MSM at the time had to remove the virtual mapping for the uart
> base. Thus when the MMU was enabled the addruart macro returned 0
> and the senduart macro would test for 0 and do nothing. It was a
> simple way to turn off DEBUG_LL when the MMU was enabled.
> The virtual mapping was added back in 6339f66 (msm: make
> debugging UART (for DEBUG_LL) configurable, 2009-11-02) but the
> patch forgot to remove the teq here. So as it stands the teq has
> been useless for two years and DEBUG_LL works fine without it.
> Cc: Nicolas Pitre <nico at fluxnic.net>
> Signed-off-by: Stephen Boyd <sboyd at codeaurora.org>
Acked-by: Nicolas Pitre <nico at linaro.org>
> arch/arm/mach-msm/include/mach/debug-macro.S | 3 +--
> 1 files changed, 1 insertions(+), 2 deletions(-)
> diff --git a/arch/arm/mach-msm/include/mach/debug-macro.S b/arch/arm/mach-msm/include/mach/debug-macro.S
> index 3ffd866..0e05f88 100644
> --- a/arch/arm/mach-msm/include/mach/debug-macro.S
> +++ b/arch/arm/mach-msm/include/mach/debug-macro.S
> @@ -30,8 +30,7 @@
> @ Write the 1 character to UARTDM_TF
> str \rd, [\rx, #0x70]
> - teq \rx, #0
> - strne \rd, [\rx, #0x0C]
> + str \rd, [\rx, #0x0C]
> Sent by an employee of the Qualcomm Innovation Center, Inc.
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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