Staging: gdm724x: Use ALIGN() macro for dummy_cnt in gdm_mux.c

As suggested in TODO list, this patch uses ALIGN() macro for variable
dummy_cnt in functions up_to_host() and gdm_mux_send() in file
gdm_mux.c.
The macro has already been defined in include/linux/kernel.h, hence is
not defined again.

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/gdm724x/gdm_mux.c b/drivers/staging/gdm724x/gdm_mux.c
index 62163673976c309e93f004ba5082b80f2a8f240d..2fa3a5a6580fa5531dfa20b9d144929948440898 100644 (file)
--- a/drivers/staging/gdm724x/gdm_mux.c
+++ b/drivers/staging/gdm724x/gdm_mux.c
@@ -158,7 +158,6 @@ static int up_to_host(struct mux_rx *r)
        unsigned int start_flag;
        unsigned int payload_size;
        unsigned short packet_type;
-       int remain;
        int dummy_cnt;
        u32 packet_size_sum = r->offset;
        int index;
@@ -176,8 +175,7 @@ static int up_to_host(struct mux_rx *r)
                        break;
                }
 
-               remain = (MUX_HEADER_SIZE + payload_size) % 4;
-               dummy_cnt = remain ? (4-remain) : 0;
+               dummy_cnt = ALIGN(MUX_HEADER_SIZE + payload_size, 4);
 
                if (len - packet_size_sum <
                        MUX_HEADER_SIZE + payload_size + dummy_cnt) {
@@ -361,7 +359,6 @@ static int gdm_mux_send(void *priv_dev, void *data, int len, int tty_index,
        struct mux_pkt_header *mux_header;
        struct mux_tx *t = NULL;
        static u32 seq_num = 1;
-       int remain;
        int dummy_cnt;
        int total_len;
        int ret;
@@ -375,8 +372,7 @@ static int gdm_mux_send(void *priv_dev, void *data, int len, int tty_index,
 
        spin_lock_irqsave(&mux_dev->write_lock, flags);
 
-       remain = (MUX_HEADER_SIZE + len) % 4;
-       dummy_cnt = remain ? (4 - remain) : 0;
+       dummy_cnt = ALIGN(MUX_HEADER_SIZE + len, 4);
 
        total_len = len + MUX_HEADER_SIZE + dummy_cnt;