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authorHui Wang <jason77.wang@gmail.com>2012-07-13 10:51:29 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-07-13 11:01:46 +0100
commit8b17e0559fe728b89b45f4d88b4b30b498862709 (patch)
tree10ace386f284572c8df17d5d6ea109e717e7a0a4 /drivers/spi
parent872675df2795389fd47b7a0ad084ba1e91665c87 (diff)
downloadlinux-8b17e0559fe728b89b45f4d88b4b30b498862709.tar.bz2
spi/imx: use gpio_is_valid to determine if a gpio is valid
Use gpio_is_valid() to replace "gpio >= 0" or "gpio < 0". Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Hui Wang <jason77.wang@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-imx.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index c12052fef68c..e834ff8c0188 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -626,7 +626,7 @@ static void spi_imx_chipselect(struct spi_device *spi, int is_active)
int active = is_active != BITBANG_CS_INACTIVE;
int dev_is_lowactive = !(spi->mode & SPI_CS_HIGH);
- if (gpio < 0)
+ if (!gpio_is_valid(gpio))
return;
gpio_set_value(gpio, dev_is_lowactive ^ active);
@@ -736,7 +736,7 @@ static int spi_imx_setup(struct spi_device *spi)
dev_dbg(&spi->dev, "%s: mode %d, %u bpw, %d hz\n", __func__,
spi->mode, spi->bits_per_word, spi->max_speed_hz);
- if (gpio >= 0)
+ if (gpio_is_valid(gpio))
gpio_direction_output(gpio, spi->mode & SPI_CS_HIGH ? 0 : 1);
spi_imx_chipselect(spi, BITBANG_CS_INACTIVE);
@@ -789,11 +789,11 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
for (i = 0; i < master->num_chipselect; i++) {
int cs_gpio = of_get_named_gpio(np, "cs-gpios", i);
- if (cs_gpio < 0 && mxc_platform_info)
+ if (!gpio_is_valid(cs_gpio) && mxc_platform_info)
cs_gpio = mxc_platform_info->chipselect[i];
spi_imx->chipselect[i] = cs_gpio;
- if (cs_gpio < 0)
+ if (!gpio_is_valid(cs_gpio))
continue;
ret = gpio_request(spi_imx->chipselect[i], DRIVER_NAME);
@@ -895,7 +895,7 @@ out_release_mem:
release_mem_region(res->start, resource_size(res));
out_gpio_free:
while (--i >= 0) {
- if (spi_imx->chipselect[i] >= 0)
+ if (gpio_is_valid(spi_imx->chipselect[i]))
gpio_free(spi_imx->chipselect[i]);
}
spi_master_put(master);
@@ -920,7 +920,7 @@ static int __devexit spi_imx_remove(struct platform_device *pdev)
iounmap(spi_imx->base);
for (i = 0; i < master->num_chipselect; i++)
- if (spi_imx->chipselect[i] >= 0)
+ if (gpio_is_valid(spi_imx->chipselect[i]))
gpio_free(spi_imx->chipselect[i]);
spi_master_put(master);