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Subject[PATCH 2/2] [ARM] am300epd: fix resource leak in am300_init_gpio_regs error path
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Date
If gpio_request fails when i > 0, gpios[0] is not freed in current
implementation.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
arch/arm/mach-pxa/am300epd.c | 13 +++++++------
1 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-pxa/am300epd.c b/arch/arm/mach-pxa/am300epd.c
index 993d75e..fa8bad2 100644
--- a/arch/arm/mach-pxa/am300epd.c
+++ b/arch/arm/mach-pxa/am300epd.c
@@ -125,10 +125,7 @@ static int am300_init_gpio_regs(struct broadsheetfb_par *par)
if (err) {
dev_err(&am300_device->dev, "failed requesting "
"gpio %d, err=%d\n", i, err);
- while (i >= DB0_GPIO_PIN)
- gpio_free(i--);
- i = ARRAY_SIZE(gpios) - 1;
- goto err_req_gpio;
+ goto err_req_gpio2;
}
}

@@ -159,9 +156,13 @@ static int am300_init_gpio_regs(struct broadsheetfb_par *par)

return 0;

+err_req_gpio2:
+ while (--i >= DB0_GPIO_PIN)
+ gpio_free(i);
+ i = ARRAY_SIZE(gpios);
err_req_gpio:
- while (i > 0)
- gpio_free(gpios[i--]);
+ while (--i >= 0)
+ gpio_free(gpios[i]);

return err;
}
--
1.7.2




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