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authorBaruch Siach <baruch@tkos.co.il>2009-12-21 16:26:46 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:43:10 -0800
commitbbcd18d1b37413d25eaf4580682b1b8e4a09ff5e (patch)
treee48354ffa1eb1efd10448ae1006fa3772f45f1fc /drivers/serial/imx.c
parentac6ec5b1de5d1d5afcbe88d73c05df71dca0ac39 (diff)
serial: imx: fix NULL dereference Oops when pdata == NULL
The platform code doesn't have to provide platform data to get sensible default behaviour from the imx serial driver. This patch does not handle NULL dereference in the IrDA case, which still requires a valid platform data pointer (in imx_startup()/imx_shutdown()), since I don't know whether there is a sensible default behaviour, or should the operation just fail cleanly. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Cc: Baruch Siach <baruch@tkos.co.il> Cc: Alan Cox <alan@linux.intel.com> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Oskar Schirmer <os@emlix.com> Cc: Fabian Godehardt <fg@emlix.com> Cc: Daniel Glöckner <dg@emlix.com> Cc: stable <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/serial/imx.c')
-rw-r--r--drivers/serial/imx.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 60d665a17a88..d00fcf8e6c70 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -1279,7 +1279,7 @@ static int serial_imx_probe(struct platform_device *pdev)
sport->use_irda = 1;
#endif
- if (pdata->init) {
+ if (pdata && pdata->init) {
ret = pdata->init(pdev);
if (ret)
goto clkput;
@@ -1292,7 +1292,7 @@ static int serial_imx_probe(struct platform_device *pdev)
return 0;
deinit:
- if (pdata->exit)
+ if (pdata && pdata->exit)
pdata->exit(pdev);
clkput:
clk_put(sport->clk);
@@ -1321,7 +1321,7 @@ static int serial_imx_remove(struct platform_device *pdev)
clk_disable(sport->clk);
- if (pdata->exit)
+ if (pdata && pdata->exit)
pdata->exit(pdev);
iounmap(sport->port.membase);