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thread: do not ignore read() return

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This fixes unused-result warning which prevents
building with -Werror.

Fixes: 924d4bf ("poller: add busy wait mechanism for intr")

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I074949b65e68405033322af34d90e96a896c8b8c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7593
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-by: <dongx.yi@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
This commit is contained in:
Jim Harris 2021-04-23 20:07:49 +00:00 committed by Tomasz Zawadzki
parent 9a3877213e
commit b9563518c6
1 changed files with 2 additions and 1 deletions
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3
lib/thread/thread.c
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@ -1119,6 +1119,7 @@ busy_poller_set_interrupt_mode(struct spdk_poller *poller, void *cb_arg, bool in
{ {
int busy_efd = poller->interruptfd; int busy_efd = poller->interruptfd;
uint64_t notify = 1; uint64_t notify = 1;
int rc __attribute__((unused));
assert(busy_efd >= 0); assert(busy_efd >= 0);
@ -1129,7 +1130,7 @@ busy_poller_set_interrupt_mode(struct spdk_poller *poller, void *cb_arg, bool in
} }
} else { } else {
/* Read on eventfd will clear its level triggering. */ /* Read on eventfd will clear its level triggering. */
read(busy_efd, &notify, sizeof(notify)); rc = read(busy_efd, &notify, sizeof(notify));
} }
} }