RE: [PATCH 3/3] usb: musb: fix null pointer check in musb_platform_init()

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> -----Original Message-----
> From: Felipe Balbi [mailto:me@xxxxxxxxxxxxxxx]
> Sent: Tuesday, January 13, 2009 4:02 AM
> To: Gupta, Ajay Kumar
> Cc: linux-usb@xxxxxxxxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx; david-b@xxxxxxxxxxx;
> felipe.balbi@xxxxxxxxx
> Subject: Re: [PATCH 3/3] usb: musb: fix null pointer check in musb_platform_init()
> 
> On Wed, Jan 07, 2009 at 04:44:20PM +0530, Ajay Kumar Gupta wrote:
> > Fixes kernel panic when musb is selected for OMAP35x EVM but twl4030 is not
> > selected as in this case otg_get_transceiver() returns null.
> >
> > Signed-off-by: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
> 
> Ajay, can you update this patch so we dev_err() the absence of a
> transceiver driver ???
> 
> Thanks, besides that, you can put my s-o-b or ack

Felipe, please check if the below one is fine.

-Ajay
> --
> balbi

========================== cut here =========================================
Fixes kernel panic when musb is selected for OMAP35x EVM but twl4030 is not
selected as in this case otg_get_transceiver() returns null.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
Acked-by: Felipe Balbi <felipe.balbi@xxxxxxxxx>
---
 drivers/usb/musb/omap2430.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 3f99536..93252c9 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -232,6 +232,10 @@ int __init musb_platform_init(struct musb *musb)
 #if defined(CONFIG_ARCH_OMAP2430)
 	omap_cfg_reg(AE5_2430_USB0HS_STP);
 #endif
+	if (!x) {
+		pr_err("omap: musb: null transceiver found\n");
+		return -ENODEV;
+	}
 
 	musb->xceiv = *x;
 	musb_platform_resume(musb);
-- 
1.5.6

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