Passing value in IS_ERR_VALUE() is wrong, as they
pass an 'int' into a function that takes an 'unsigned long'
argument. This happens to work because the type is sign-extended
on 64-bit architectures before it gets converted into an
unsigned type.
Passing an 'unsigned short' or 'unsigned int'
argument into IS_ERR_VALUE() is guaranteed to be broken, as are
8-bit integers and types that are wider than 'unsigned long'.
Any user will get compilation warning for that do not pass an
'unsigned long' argument.
Commit '287980e49f; - This change is alreday fixes lots of other
worst abusers.
Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
drivers/soc/fsl/qe/ucc_fast.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/soc/fsl/qe/ucc_fast.c b/drivers/soc/fsl/qe/ucc_fast.c
index a768931..7cc783c 100644
--- a/drivers/soc/fsl/qe/ucc_fast.c
+++ b/drivers/soc/fsl/qe/ucc_fast.c
@@ -268,7 +268,7 @@ int ucc_fast_init(struct ucc_fast_info * uf_info, struct
ucc_fast_private ** ucc
/* Allocate memory for Tx Virtual Fifo */
uccf->ucc_fast_tx_virtual_fifo_base_offset =
qe_muram_alloc(uf_info->utfs, UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
- if (IS_ERR_VALUE(uccf->ucc_fast_tx_virtual_fifo_base_offset)) {
+ if (uccf->ucc_fast_tx_virtual_fifo_base_offset < 0) {
printk(KERN_ERR "%s: cannot allocate MURAM for TX FIFO\n",
__func__);
uccf->ucc_fast_tx_virtual_fifo_base_offset = 0;
@@ -281,7 +281,7 @@ int ucc_fast_init(struct ucc_fast_info * uf_info, struct
ucc_fast_private ** ucc
qe_muram_alloc(uf_info->urfs +
UCC_FAST_RECEIVE_VIRTUAL_FIFO_SIZE_FUDGE_FACTOR,
UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
- if (IS_ERR_VALUE(uccf->ucc_fast_rx_virtual_fifo_base_offset)) {
+ if (uccf->ucc_fast_rx_virtual_fifo_base_offset < 0) {
printk(KERN_ERR "%s: cannot allocate MURAM for RX FIFO\n",
__func__);
uccf->ucc_fast_rx_virtual_fifo_base_offset = 0;
--
1.9.1
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