diff options
| author | Christian Lamparter <chunkeey@gmail.com> | 2022-03-02 22:51:35 +0300 |
|---|---|---|
| committer | Kalle Valo <quic_kvalo@quicinc.com> | 2022-03-10 18:53:38 +0300 |
| commit | 23de0fa0d2a05ff71c7bc8df9d12c9f23be83f13 (patch) | |
| tree | 2a14b42cbc2c90569c5fa3a9fbc92f39343c0b36 | |
| parent | e42fe43a216cab59b6cc0cba96ec23db2d81a5d4 (diff) | |
| download | linux-23de0fa0d2a05ff71c7bc8df9d12c9f23be83f13.tar.xz | |
carl9170: devres-ing hwrng_register usage
devres will take care of freeing the hwrng once it is no longer needed.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/d1c16490462a9371ab3cc16a018ef5e08382a35e.1646250537.git.chunkeey@gmail.com
| -rw-r--r-- | drivers/net/wireless/ath/carl9170/carl9170.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/carl9170/main.c | 29 |
2 files changed, 3 insertions, 27 deletions
diff --git a/drivers/net/wireless/ath/carl9170/carl9170.h b/drivers/net/wireless/ath/carl9170/carl9170.h index 84a8ce0784b1..ba29b4aebe9f 100644 --- a/drivers/net/wireless/ath/carl9170/carl9170.h +++ b/drivers/net/wireless/ath/carl9170/carl9170.h @@ -458,7 +458,6 @@ struct ar9170 { # define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN struct { struct hwrng rng; - bool initialized; char name[30 + 1]; u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)]; unsigned int cache_idx; diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c index f6974aff0c59..9495b3da1978 100644 --- a/drivers/net/wireless/ath/carl9170/main.c +++ b/drivers/net/wireless/ath/carl9170/main.c @@ -1539,7 +1539,7 @@ static int carl9170_rng_get(struct ar9170 *ar) BUILD_BUG_ON(RB > CARL9170_MAX_CMD_PAYLOAD_LEN); - if (!IS_ACCEPTING_CMD(ar) || !ar->rng.initialized) + if (!IS_ACCEPTING_CMD(ar)) return -EAGAIN; count = ARRAY_SIZE(ar->rng.cache); @@ -1585,14 +1585,6 @@ static int carl9170_rng_read(struct hwrng *rng, u32 *data) return sizeof(u16); } -static void carl9170_unregister_hwrng(struct ar9170 *ar) -{ - if (ar->rng.initialized) { - hwrng_unregister(&ar->rng.rng); - ar->rng.initialized = false; - } -} - static int carl9170_register_hwrng(struct ar9170 *ar) { int err; @@ -1603,25 +1595,14 @@ static int carl9170_register_hwrng(struct ar9170 *ar) ar->rng.rng.data_read = carl9170_rng_read; ar->rng.rng.priv = (unsigned long)ar; - if (WARN_ON(ar->rng.initialized)) - return -EALREADY; - - err = hwrng_register(&ar->rng.rng); + err = devm_hwrng_register(&ar->udev->dev, &ar->rng.rng); if (err) { dev_err(&ar->udev->dev, "Failed to register the random " "number generator (%d)\n", err); return err; } - ar->rng.initialized = true; - - err = carl9170_rng_get(ar); - if (err) { - carl9170_unregister_hwrng(ar); - return err; - } - - return 0; + return carl9170_rng_get(ar); } #endif /* CONFIG_CARL9170_HWRNG */ @@ -2064,10 +2045,6 @@ void carl9170_unregister(struct ar9170 *ar) } #endif /* CONFIG_CARL9170_WPC */ -#ifdef CONFIG_CARL9170_HWRNG - carl9170_unregister_hwrng(ar); -#endif /* CONFIG_CARL9170_HWRNG */ - carl9170_cancel_worker(ar); cancel_work_sync(&ar->restart_work); |