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| author | Richard Purdie <rpurdie@rpsys.net> | 2006-04-18 23:18:54 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-04-18 23:18:54 +0100 |
| commit | 608c783aaa0abe39e3672f65b786cdade8db6df9 (patch) | |
| tree | 63c2ef227582cc4506b4d965ba306d62ea919c9a /arch/arm/mach-pxa/corgi_ssp.c | |
| parent | 7ea3bbbc8997df1ae7dc4e736d163dabc00f4721 (diff) | |
| download | linux-608c783aaa0abe39e3672f65b786cdade8db6df9.tar.gz linux-608c783aaa0abe39e3672f65b786cdade8db6df9.tar.bz2 linux-608c783aaa0abe39e3672f65b786cdade8db6df9.zip | |
[ARM] 3479/1: Corgi SSP: Fix potential concurrent access problem
Patch from Richard Purdie
corgi_ssp_probe() should not access GPDR directly but should use
pxa_gpio_mode() which has appropriate locking and other safeguards.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/corgi_ssp.c')
| -rw-r--r-- | arch/arm/mach-pxa/corgi_ssp.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/arch/arm/mach-pxa/corgi_ssp.c b/arch/arm/mach-pxa/corgi_ssp.c index b371d723635f..8a25a1c8019f 100644 --- a/arch/arm/mach-pxa/corgi_ssp.c +++ b/arch/arm/mach-pxa/corgi_ssp.c @@ -196,12 +196,9 @@ static int __init corgi_ssp_probe(struct platform_device *dev) int ret; /* Chip Select - Disable All */ - GPDR(ssp_machinfo->cs_lcdcon) |= GPIO_bit(ssp_machinfo->cs_lcdcon); /* output */ - GPSR(ssp_machinfo->cs_lcdcon) = GPIO_bit(ssp_machinfo->cs_lcdcon); /* High - Disable LCD Control/Timing Gen */ - GPDR(ssp_machinfo->cs_max1111) |= GPIO_bit(ssp_machinfo->cs_max1111); /* output */ - GPSR(ssp_machinfo->cs_max1111) = GPIO_bit(ssp_machinfo->cs_max1111); /* High - Disable MAX1111*/ - GPDR(ssp_machinfo->cs_ads7846) |= GPIO_bit(ssp_machinfo->cs_ads7846); /* output */ - GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/ + pxa_gpio_mode(ssp_machinfo->cs_lcdcon | GPIO_OUT | GPIO_DFLT_HIGH); + pxa_gpio_mode(ssp_machinfo->cs_max1111 | GPIO_OUT | GPIO_DFLT_HIGH); + pxa_gpio_mode(ssp_machinfo->cs_ads7846 | GPIO_OUT | GPIO_DFLT_HIGH); ret = ssp_init(&corgi_ssp_dev, ssp_machinfo->port, 0); |