From: Markus Elfring <[email protected]>
Date: Tue, 7 Feb 2017 19:15:21 +0100
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The script "checkpatch.pl" pointed information out like the following.

Comparison to NULL could be written !…

Thus fix affected source code places.

Signed-off-by: Markus Elfring <[email protected]>
---
 drivers/hid/hid-core.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 1f75c1c022f0..f4ea3590954c 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -959,7 +959,7 @@ int hid_open_report(struct hid_device *device)
        size = device->dev_rsize;
 
        buf = kmemdup(start, size, GFP_KERNEL);
-       if (buf == NULL)
+       if (!buf)
                return -ENOMEM;
 
        if (device->driver->report_fixup)
@@ -969,7 +969,7 @@ int hid_open_report(struct hid_device *device)
 
        start = kmemdup(start, size, GFP_KERNEL);
        kfree(buf);
-       if (start == NULL)
+       if (!start)
                return -ENOMEM;
 
        device->rdesc = start;
@@ -1414,7 +1414,7 @@ static struct hid_report *hid_get_report(struct 
hid_report_enum *report_enum,
                n = *data;
 
        report = report_enum->report_id_hash[n];
-       if (report == NULL)
+       if (!report)
                dbg_hid("undefined report_id %u received\n", n);
 
        return report;
@@ -2222,7 +2222,7 @@ static int hid_device_probe(struct device *dev)
 
        if (!hdev->driver) {
                id = hid_match_device(hdev, hdrv);
-               if (id == NULL) {
+               if (!id) {
                        ret = -ENODEV;
                        goto unlock;
                }
@@ -2719,7 +2719,7 @@ struct hid_device *hid_allocate_device(void)
        int ret = -ENOMEM;
 
        hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
-       if (hdev == NULL)
+       if (!hdev)
                return ERR_PTR(ret);
 
        device_initialize(&hdev->dev);
-- 
2.11.1

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