lkml.org 
[lkml]   [2018]   [Jun]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH v3 03/21] Staging: gdm724x: use match_string() helper
From
Date
match_string() returns the index of an array for a matching string,
which can be used instead of open coded variant.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Quytelda Kahja <quytelda@tamalin.org>
Cc: devel@driverdev.osuosl.org
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
---
v3:
- no need to check input tty's index - per Greg
v2:
- const DRIVER_STRING instead - per Andy

drivers/staging/gdm724x/gdm_tty.c | 18 +++++-------------
1 file changed, 5 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c
index 3cdebb8..29ac6b5 100644
--- a/drivers/staging/gdm724x/gdm_tty.c
+++ b/drivers/staging/gdm724x/gdm_tty.c
@@ -43,7 +43,7 @@
static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
static DEFINE_MUTEX(gdm_table_lock);

-static char *DRIVER_STRING[TTY_MAX_COUNT] = {"GCTATC", "GCTDM"};
+static const char *DRIVER_STRING[TTY_MAX_COUNT] = {"GCTATC", "GCTDM"};
static char *DEVICE_STRING[TTY_MAX_COUNT] = {"GCT-ATC", "GCT-DM"};

static void gdm_port_destruct(struct tty_port *port)
@@ -65,22 +65,14 @@ static int gdm_tty_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct gdm *gdm = NULL;
int ret;
- int i;
- int j;
-
- j = GDM_TTY_MINOR;
- for (i = 0; i < TTY_MAX_COUNT; i++) {
- if (!strcmp(tty->driver->driver_name, DRIVER_STRING[i])) {
- j = tty->index;
- break;
- }
- }

- if (j == GDM_TTY_MINOR)
+ ret = match_string(DRIVER_STRING, TTY_MAX_COUNT,
+ tty->driver->driver_name);
+ if (ret < 0)
return -ENODEV;

mutex_lock(&gdm_table_lock);
- gdm = gdm_table[i][j];
+ gdm = gdm_table[ret][tty->index];
if (!gdm) {
mutex_unlock(&gdm_table_lock);
return -ENODEV;
--
1.7.12.4


\
 
 \ /
  Last update: 2018-06-06 04:25    [W:0.457 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site