staging: erofs: formatting fix to NULL comparison

This patch does not change the logic, it only
corrects the formatting and checkpatch checks by
to NULL comparison.

The patch fixes 5 checks of type:
"Comparison to NULL could be written".

Signed-off-by: Pavel Zemlyanoy <zemlyanoy@ispras.ru>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/erofs/unzip_vle_lz4.c b/drivers/staging/erofs/unzip_vle_lz4.c
index f9e6b78..54da72a 100644 (file)
--- a/drivers/staging/erofs/unzip_vle_lz4.c
+++ b/drivers/staging/erofs/unzip_vle_lz4.c
@@ -42,8 +42,8 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages,
                struct page *page = pages[i];
                void *dst;
 
-               if (page == NULL) {
-                       if (src != NULL) {
+               if (!page) {
+                       if (src) {
                                if (!mirrored[j])
                                        kunmap_atomic(src);
                                src = NULL;
@@ -64,7 +64,7 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages,
                }
 
                if (i) {
-                       if (src == NULL)
+                       if (!src)
                                src = mirrored[i-1] ?
                                        percpu_data + (i-1) * PAGE_SIZE :
                                        kmap_atomic(compressed_pages[i-1]);
@@ -92,7 +92,7 @@ int z_erofs_vle_plain_copy(struct page **compressed_pages,
                kunmap_atomic(dst);
        }
 
-       if (src != NULL && !mirrored[j])
+       if (src && !mirrored[j])
                kunmap_atomic(src);
 
        preempt_enable();
@@ -136,7 +136,7 @@ int z_erofs_vle_unzip_fast_percpu(struct page **compressed_pages,
        for (i = 0; i < nr_pages; ++i) {
                j = min((unsigned int)PAGE_SIZE - pageofs, outlen);
 
-               if (pages[i] != NULL) {
+               if (pages[i]) {
                        if (ret < 0)
                                SetPageError(pages[i]);
                        else if (clusterpages == 1 && pages[i] == compressed_pages[0])