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ipack: add error handling for ioremap_nocache 

When ioremap_nocache fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling ioremap_nocache.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhouyang Jia 2018-06-12 11:07:21 +08:00 committed by Greg Kroah-Hartman
parent 5c74f27bf6
commit 43986798fd
1 changed files with 7 additions and 0 deletions
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7
drivers/ipack/carriers/tpci200.c
View File

@ -304,6 +304,13 @@ static int tpci200_register(struct tpci200_board *tpci200)
ioremap_nocache(pci_resource_start(tpci200->info->pdev,
TPCI200_IP_INTERFACE_BAR),
TPCI200_IFACE_SIZE);
if (!tpci200->info->interface_regs) {
dev_err(&tpci200->info->pdev->dev,
"(bn 0x%X, sn 0x%X) failed to map driver user space!",
tpci200->info->pdev->bus->number,
tpci200->info->pdev->devfn);
goto out_release_mem8_space;
}
/* Initialize lock that protects interface_regs */
spin_lock_init(&tpci200->regs_lock);