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net: bnx2x: fix improper return value 

Macro BNX2X_ALLOC_AND_SET(arr, lbl, func) calls kmalloc() to allocate
memory, and jumps to label "lbl" if the allocation fails. Label "lbl"
first cleans memory and then returns variable rc. Before calling the
macro, the value of variable rc is 0. Because 0 means no error, the
callers of bnx2x_init_firmware() may be misled. This patch fixes the bug,
assigning "-ENOMEM" to rc before calling macro NX2X_ALLOC_AND_SET().

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=189141

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pan Bian 2016-12-04 18:46:03 +08:00 committed by David S. Miller
parent 0ff18d2d36
commit 005f7e68e7
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
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@ -13505,6 +13505,7 @@ static int bnx2x_init_firmware(struct bnx2x *bp)
/* Initialize the pointers to the init arrays */ /* Initialize the pointers to the init arrays */
/* Blob */ /* Blob */
rc = -ENOMEM;
BNX2X_ALLOC_AND_SET(init_data, request_firmware_exit, be32_to_cpu_n); BNX2X_ALLOC_AND_SET(init_data, request_firmware_exit, be32_to_cpu_n);
/* Opcodes */ /* Opcodes */