[PATCH] staging: fbtft: fix NULL comparison checkpatch warning

[Carlos Palminha]

Fixed the following checkpatch warnings (task #10 of eudyptula challenge):
- NULL comparison rewritten to use '!' operator

Signed-off-by: Carlos Palminha <palmi...@synopsys.com>
---
 drivers/staging/fbtft/fbtft_device.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft_device.c 
b/drivers/staging/fbtft/fbtft_device.c
index e9f25dd..e921183 100644
--- a/drivers/staging/fbtft/fbtft_device.c
+++ b/drivers/staging/fbtft/fbtft_device.c
@@ -1418,14 +1418,14 @@ static int __init fbtft_device_init(void)
 
        /* parse module parameter: gpios */
        while ((p_gpio = strsep(&gpios, ","))) {
-               if (strchr(p_gpio, ':') == NULL) {
+               if (!strchr(p_gpio, ':')) {
                        pr_err("error: missing ':' in gpios parameter: %s\n",
                               p_gpio);
                        return -EINVAL;
                }
                p_num = p_gpio;
                p_name = strsep(&p_num, ":");
-               if (p_name == NULL || p_num == NULL) {
+               if (!p_name || !p_num) {
                        pr_err("something bad happened parsing gpios parameter: 
%s\n",
                               p_gpio);
                        return -EINVAL;
-- 
2.9.3

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