spi: designware: delete premature free_irq
Author: Julia Lawall <Julia.Lawall@lip6.fr>
Free_irq is not needed if there has been no request_irq. Free_irq is
removed from both the probe and remove functions. The correct request_irq
and free_irq appear to be in the add_host and remove_host functions in
spi-dw.c.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
//
@@
expression e;
@@
*e = platform_get_irq(...);
... when != request_irq(e,...)
*free_irq(e,...)
//
Signed-off-by: Julia Lawall
Signed-off-by: Mark Brown
---
drivers/spi/spi-dw-mmio.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 4aa8be8..168c620 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -74,7 +74,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
dwsmmio->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(dwsmmio->clk)) {
ret = PTR_ERR(dwsmmio->clk);
- goto err_irq;
+ goto err_unmap;
}
clk_enable(dwsmmio->clk);
@@ -94,8 +94,6 @@ err_clk:
clk_disable(dwsmmio->clk);
clk_put(dwsmmio->clk);
dwsmmio->clk = NULL;
-err_irq:
- free_irq(dws->irq, dws);
err_unmap:
iounmap(dws->regs);
err_release_reg:
@@ -115,7 +113,6 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
clk_put(dwsmmio->clk);
dwsmmio->clk = NULL;
- free_irq(dwsmmio->dws.irq, &dwsmmio->dws);
dw_spi_remove_host(&dwsmmio->dws);
iounmap(dwsmmio->dws.regs);
kfree(dwsmmio); |
---
drivers/spi/spi-dw-mmio.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 4aa8be8..168c620 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -74,7 +74,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
dwsmmio->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(dwsmmio->clk)) {
ret = PTR_ERR(dwsmmio->clk);
- goto err_irq;
+ goto err_unmap;
}
clk_enable(dwsmmio->clk);
@@ -94,8 +94,6 @@ err_clk:
clk_disable(dwsmmio->clk);
clk_put(dwsmmio->clk);
dwsmmio->clk = NULL;
-err_irq:
- free_irq(dws->irq, dws);
err_unmap:
iounmap(dws->regs);
err_release_reg:
@@ -115,7 +113,6 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
clk_put(dwsmmio->clk);
dwsmmio->clk = NULL;
- free_irq(dwsmmio->dws.irq, &dwsmmio->dws);
dw_spi_remove_host(&dwsmmio->dws);
iounmap(dwsmmio->dws.regs);
kfree(dwsmmio);