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Cleanup: Use NULL when doing NULL pointer comparisons

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The Linux 5.16.14 kernel's coccicheck caught this. The semantic
patch that caught it was:

./scripts/coccinelle/null/badzero.cocci

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14372
This commit is contained in:
Richard Yao 2023-01-10 16:58:21 -05:00 committed by Brian Behlendorf
parent 64195fc89f
commit 4ef69de384
4 changed files with 6 additions and 6 deletions
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2
module/os/freebsd/spl/callb.c
View File

@ -263,7 +263,7 @@ callb_execute_class(int class, int code)
mutex_enter(&ct->ct_lock); mutex_enter(&ct->ct_lock);
for (cp = ct->ct_first_cb[class]; for (cp = ct->ct_first_cb[class];
cp != NULL && ret == 0; cp = cp->c_next) { cp != NULL && ret == NULL; cp = cp->c_next) {
while (cp->c_flag & CALLB_EXECUTING) while (cp->c_flag & CALLB_EXECUTING)
cv_wait(&cp->c_done_cv, &ct->ct_lock); cv_wait(&cp->c_done_cv, &ct->ct_lock);
/* /*

2
module/zfs/arc.c
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@ -4783,7 +4783,7 @@ arc_flush(spa_t *spa, boolean_t retry)
* no good way to determine if all of a spa's buffers have been * no good way to determine if all of a spa's buffers have been
* evicted from an arc state. * evicted from an arc state.
*/ */
ASSERT(!retry || spa == 0); ASSERT(!retry || spa == NULL);
if (spa != NULL) if (spa != NULL)
guid = spa_load_guid(spa); guid = spa_load_guid(spa);

4
module/zfs/blake3_zfs.c
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@ -47,7 +47,7 @@ void
abd_checksum_blake3_native(abd_t *abd, uint64_t size, const void *ctx_template, abd_checksum_blake3_native(abd_t *abd, uint64_t size, const void *ctx_template,
zio_cksum_t *zcp) zio_cksum_t *zcp)
{ {
ASSERT(ctx_template != 0); ASSERT(ctx_template != NULL);
#if defined(_KERNEL) #if defined(_KERNEL)
BLAKE3_CTX *ctx = blake3_per_cpu_ctx[CPU_SEQID_UNSTABLE]; BLAKE3_CTX *ctx = blake3_per_cpu_ctx[CPU_SEQID_UNSTABLE];
@ -76,7 +76,7 @@ abd_checksum_blake3_byteswap(abd_t *abd, uint64_t size,
{ {
zio_cksum_t tmp; zio_cksum_t tmp;
ASSERT(ctx_template != 0); ASSERT(ctx_template != NULL);
abd_checksum_blake3_native(abd, size, ctx_template, &tmp); abd_checksum_blake3_native(abd, size, ctx_template, &tmp);
zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]); zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]);

4
module/zfs/zap.c
View File

@ -946,9 +946,9 @@ fzap_length(zap_name_t *zn,
if (err != 0) if (err != 0)
goto out; goto out;
if (integer_size != 0) if (integer_size != NULL)
*integer_size = zeh.zeh_integer_size; *integer_size = zeh.zeh_integer_size;
if (num_integers != 0) if (num_integers != NULL)
*num_integers = zeh.zeh_num_integers; *num_integers = zeh.zeh_num_integers;
out: out:
zap_put_leaf(l); zap_put_leaf(l);