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spi: designware: delete premature free_irq

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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/)

// <smpl>
@@
expression e;
@@

*e = platform_get_irq(...);
... when != request_irq(e,...)
*free_irq(e,...)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Julia Lawall 2013-09-02 11:54:20 +02:00 committed by Mark Brown
parent 272b98c645
commit 1e0d191f62
1 changed files with 1 additions and 4 deletions
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5
drivers/spi/spi-dw-mmio.c
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@ -74,7 +74,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
dwsmmio->clk = clk_get(&pdev->dev, NULL); dwsmmio->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(dwsmmio->clk)) { if (IS_ERR(dwsmmio->clk)) {
ret = PTR_ERR(dwsmmio->clk); ret = PTR_ERR(dwsmmio->clk);
goto err_irq; goto err_unmap;
} }
clk_enable(dwsmmio->clk); clk_enable(dwsmmio->clk);
@ -94,8 +94,6 @@ err_clk:
clk_disable(dwsmmio->clk); clk_disable(dwsmmio->clk);
clk_put(dwsmmio->clk); clk_put(dwsmmio->clk);
dwsmmio->clk = NULL; dwsmmio->clk = NULL;
err_irq:
free_irq(dws->irq, dws);
err_unmap: err_unmap:
iounmap(dws->regs); iounmap(dws->regs);
err_release_reg: err_release_reg:
@ -115,7 +113,6 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
clk_put(dwsmmio->clk); clk_put(dwsmmio->clk);
dwsmmio->clk = NULL; dwsmmio->clk = NULL;
free_irq(dwsmmio->dws.irq, &dwsmmio->dws);
dw_spi_remove_host(&dwsmmio->dws); dw_spi_remove_host(&dwsmmio->dws);
iounmap(dwsmmio->dws.regs); iounmap(dwsmmio->dws.regs);
kfree(dwsmmio); kfree(dwsmmio);