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usb/hcd: Fix a NULL vs IS_ERR() bug in usb_hcd_setup_local_mem() 

The devm_memremap() function doesn't return NULL, it returns error
pointers.

Fixes: b0310c2f09 ("USB: use genalloc for USB HCs with local memory")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20190607135709.GC16718@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2019-06-07 16:57:09 +03:00 committed by Greg Kroah-Hartman
parent d74ffae8b8
commit 94b9a70d32
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/core/hcd.c
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@ -3052,8 +3052,8 @@ int usb_hcd_setup_local_mem(struct usb_hcd *hcd, phys_addr_t phys_addr,
local_mem = devm_memremap(hcd->self.sysdev, phys_addr,
size, MEMREMAP_WC);
if (!local_mem)
return -ENOMEM;
if (IS_ERR(local_mem))
return PTR_ERR(local_mem);
/*
* Here we pass a dma_addr_t but the arg type is a phys_addr_t.