-Return type of 'qe_muram_alloc' is 'unsigned long', That Was trying to
assigned in ucc_fast_tx_virtual_fifo_base_offset and
ucc_fast_rx_virtual_fifo_base_offset. These variable are 'unsigned int'.
So before assginment need a proper type casting.
-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.
Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
drivers/soc/fsl/qe/ucc_fast.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/soc/fsl/qe/ucc_fast.c b/drivers/soc/fsl/qe/ucc_fast.c
index a768931..98eed25 100644
--- a/drivers/soc/fsl/qe/ucc_fast.c
+++ b/drivers/soc/fsl/qe/ucc_fast.c
@@ -267,8 +267,10 @@ 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)) {
+ (unsigned int)qe_muram_alloc(uf_info->utfs,
+ UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
+ if (IS_ERR_VALUE(
+ (unsigned long)uccf->ucc_fast_tx_virtual_fifo_base_offset)) {
printk(KERN_ERR "%s: cannot allocate MURAM for TX FIFO\n",
__func__);
uccf->ucc_fast_tx_virtual_fifo_base_offset = 0;
@@ -278,10 +280,11 @@ int ucc_fast_init(struct ucc_fast_info * uf_info, struct
ucc_fast_private ** ucc
/* Allocate memory for Rx Virtual Fifo */
uccf->ucc_fast_rx_virtual_fifo_base_offset =
- qe_muram_alloc(uf_info->urfs +
+ (unsigned int)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 (IS_ERR_VALUE(
+ (unsigned long)uccf->ucc_fast_rx_virtual_fifo_base_offset)) {
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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