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mlx4: Use snprintf instead of complicated strcpy 

This fixes a compilation warning in sysfs.c

drivers/infiniband/hw/mlx4/sysfs.c:360:2: warning: 'strncpy' output may be
truncated copying 8 bytes from a string of length 31
[-Wstringop-truncation]

By eliminating the temporary stack buffer.

Signed-off-by: Qian Cai <cai@gmx.us>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Qian Cai 2018-11-29 21:18:07 -05:00 committed by Jason Gunthorpe
parent 9aefcabe57
commit 0fbc9b8b4e
1 changed files with 4 additions and 8 deletions
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12
drivers/infiniband/hw/mlx4/sysfs.c
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@ -353,16 +353,12 @@ err:
static void get_name(struct mlx4_ib_dev *dev, char *name, int i, int max)
{
char base_name[9];
/* pci_name format is: bus:dev:func -> xxxx:yy:zz.n */
strlcpy(name, pci_name(dev->dev->persist->pdev), max);
strncpy(base_name, name, 8); /*till xxxx:yy:*/
base_name[8] = '\0';
/* with no ARI only 3 last bits are used so when the fn is higher than 8
/* pci_name format is: bus:dev:func -> xxxx:yy:zz.n
* with no ARI only 3 last bits are used so when the fn is higher than 8
* need to add it to the dev num, so count in the last number will be
* modulo 8 */
sprintf(name, "%s%.2d.%d", base_name, (i/8), (i%8));
snprintf(name, max, "%.8s%.2d.%d", pci_name(dev->dev->persist->pdev),
i / 8, i % 8);
}
struct mlx4_port {