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imx: i2c: Zap unnecessary malloc() calls

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The malloc() calls are unnecessary, just allocate the stuff on stack.
While at it, reorder the code a little, so that only one variable is
used for the text, use snprintf() instead of sprintf() and use %01d
as a formatting string to avoid any possible overflows.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Nikita Kiryanov <nikita@compulab.co.il>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
This commit is contained in:
Marek Vasut 2014-12-16 14:09:16 +01:00 • committed by Stefano Babic
parent c86efd85e9
commit cd3c5896b6
1 changed files with 8 additions and 16 deletions
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24
arch/arm/imx-common/i2c-mxv7.c
View file

@ -73,26 +73,21 @@ static void * const i2c_bases[] = {
int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
struct i2c_pads_info *p)
{
char *name1, *name2;
char name[9];
int ret;
if (i2c_index >= ARRAY_SIZE(i2c_bases))
return -EINVAL;
name1 = malloc(9);
name2 = malloc(9);
if (!name1 || !name2)
return -ENOMEM;
sprintf(name1, "i2c_sda%d", i2c_index);
sprintf(name2, "i2c_scl%d", i2c_index);
ret = gpio_request(p->sda.gp, name1);
snprintf(name, sizeof(name), "i2c_sda%01d", i2c_index);
ret = gpio_request(p->sda.gp, name);
if (ret)
goto err_req1;
return ret;
ret = gpio_request(p->scl.gp, name2);
snprintf(name, sizeof(name), "i2c_scl%01d", i2c_index);
ret = gpio_request(p->scl.gp, name);
if (ret)
goto err_req2;
goto err_req;
/* Enable i2c clock */
ret = enable_i2c_clk(1, i2c_index);
@ -112,11 +107,8 @@ int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
err_idle:
err_clk:
gpio_free(p->scl.gp);
err_req2:
err_req:
gpio_free(p->sda.gp);
err_req1:
free(name1);
free(name2);
return ret;
}