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atm: lanai: set error code when ioremap fails 

In function lanai_dev_open(), when the call to ioremap() fails, the
value of return variable result is 0. 0 means no error in this context.
This patch fixes the bug, assigning "-ENOMEM" to result when ioremap()
returns a NULL pointer.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188791

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pan Bian 2016-12-03 20:25:45 +08:00 committed by David S. Miller
parent 51920830d9
commit 4606c9e8c5
1 changed files with 1 additions and 0 deletions
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drivers/atm/lanai.c
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@ -2143,6 +2143,7 @@ static int lanai_dev_open(struct atm_dev *atmdev)
lanai->base = (bus_addr_t) ioremap(raw_base, LANAI_MAPPING_SIZE); lanai->base = (bus_addr_t) ioremap(raw_base, LANAI_MAPPING_SIZE);
if (lanai->base == NULL) { if (lanai->base == NULL) {
printk(KERN_ERR DEV_LABEL ": couldn't remap I/O space\n"); printk(KERN_ERR DEV_LABEL ": couldn't remap I/O space\n");
result = -ENOMEM;
goto error_pci; goto error_pci;
} }
/* 3.3: Reset lanai and PHY */ /* 3.3: Reset lanai and PHY */