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atmel_pwm: set up only one PWM clock when allocating a clock 

This patch will only setup one clock, if free, and return this clock to the
caller.  The previous solution would setup both clocks with the same prescaler
and divider and return PWM_CPR_CLKB, thus taking both clocks in the same call
without the caller knowing.

Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hans-Christian Egtvedt 2008-07-23 21:28:55 -07:00 committed by Linus Torvalds
parent 82736f4d1d
commit 5aa0769d08
1 changed files with 1 additions and 2 deletions
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3
drivers/misc/atmel_pwm.c
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@ -211,8 +211,7 @@ int pwm_clk_alloc(unsigned prescale, unsigned div)
if ((mr & 0xffff) == 0) {
mr |= val;
ret = PWM_CPR_CLKA;
}
if ((mr & (0xffff << 16)) == 0) {
} else if ((mr & (0xffff << 16)) == 0) {
mr |= val << 16;
ret = PWM_CPR_CLKB;
}