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Tue, 15 Oct 2024 10:56:14 +0000 (GMT) From: Vishal Chourasia To: linuxppc-dev@lists.ozlabs.org, herbert@gondor.apana.org.au, davem@davemloft.net, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, naveen@kernel.org, maddy@linux.ibm.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Vishal Chourasia Subject: [v2 PATCH 1/2] crypto/nx: Rename devdata_mutex to devdata_spinlock Date: Tue, 15 Oct 2024 16:25:51 +0530 Message-ID: <20241015105551.1817348-2-vishalc@linux.ibm.com> X-Mailer: git-send-email 2.47.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: HKfRnHAqL1xiFkXwLc3bSU4HDEzsYXU- X-Proofpoint-ORIG-GUID: nU97NAV6X78iUj4JyH_ltF9gpyi0-IwX X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 clxscore=1015 mlxscore=0 malwarescore=0 adultscore=0 impostorscore=0 phishscore=0 mlxlogscore=928 spamscore=0 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410150072 Rename devdata_mutex to devdata_spinlock to accurately reflect its implementation as a spinlock. [1] v1 https://lore.kernel.org/all/ZwyqD-w5hEhrnqTB@linux.ibm.com Signed-off-by: Vishal Chourasia --- drivers/crypto/nx/nx-common-pseries.c | 34 +++++++++++++-------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/drivers/crypto/nx/nx-common-pseries.c b/drivers/crypto/nx/nx-common-pseries.c index 35f2d0d8507ed..a0eb900383af7 100644 --- a/drivers/crypto/nx/nx-common-pseries.c +++ b/drivers/crypto/nx/nx-common-pseries.c @@ -133,7 +133,7 @@ struct nx842_devdata { }; static struct nx842_devdata __rcu *devdata; -static DEFINE_SPINLOCK(devdata_mutex); +static DEFINE_SPINLOCK(devdata_spinlock); #define NX842_COUNTER_INC(_x) \ static inline void nx842_inc_##_x( \ @@ -750,15 +750,15 @@ static int nx842_OF_upd(struct property *new_prop) if (!new_devdata) return -ENOMEM; - spin_lock_irqsave(&devdata_mutex, flags); + spin_lock_irqsave(&devdata_spinlock, flags); old_devdata = rcu_dereference_check(devdata, - lockdep_is_held(&devdata_mutex)); + lockdep_is_held(&devdata_spinlock)); if (old_devdata) of_node = old_devdata->dev->of_node; if (!old_devdata || !of_node) { pr_err("%s: device is not available\n", __func__); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); kfree(new_devdata); return -ENODEV; } @@ -810,7 +810,7 @@ static int nx842_OF_upd(struct property *new_prop) old_devdata->max_sg_len); rcu_assign_pointer(devdata, new_devdata); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); synchronize_rcu(); dev_set_drvdata(new_devdata->dev, new_devdata); kfree(old_devdata); @@ -821,13 +821,13 @@ static int nx842_OF_upd(struct property *new_prop) dev_info(old_devdata->dev, "%s: device disabled\n", __func__); nx842_OF_set_defaults(new_devdata); rcu_assign_pointer(devdata, new_devdata); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); synchronize_rcu(); dev_set_drvdata(new_devdata->dev, new_devdata); kfree(old_devdata); } else { dev_err(old_devdata->dev, "%s: could not update driver from hardware\n", __func__); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); } if (!ret) @@ -1045,9 +1045,9 @@ static int nx842_probe(struct vio_dev *viodev, return -ENOMEM; } - spin_lock_irqsave(&devdata_mutex, flags); + spin_lock_irqsave(&devdata_spinlock, flags); old_devdata = rcu_dereference_check(devdata, - lockdep_is_held(&devdata_mutex)); + lockdep_is_held(&devdata_spinlock)); if (old_devdata && old_devdata->vdev != NULL) { dev_err(&viodev->dev, "%s: Attempt to register more than one instance of the hardware\n", __func__); @@ -1062,7 +1062,7 @@ static int nx842_probe(struct vio_dev *viodev, nx842_OF_set_defaults(new_devdata); rcu_assign_pointer(devdata, new_devdata); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); synchronize_rcu(); kfree(old_devdata); @@ -1101,7 +1101,7 @@ static int nx842_probe(struct vio_dev *viodev, return 0; error_unlock: - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); if (new_devdata) kfree(new_devdata->counters); kfree(new_devdata); @@ -1122,12 +1122,12 @@ static void nx842_remove(struct vio_dev *viodev) crypto_unregister_alg(&nx842_pseries_alg); - spin_lock_irqsave(&devdata_mutex, flags); + spin_lock_irqsave(&devdata_spinlock, flags); old_devdata = rcu_dereference_check(devdata, - lockdep_is_held(&devdata_mutex)); + lockdep_is_held(&devdata_spinlock)); of_reconfig_notifier_unregister(&nx842_of_nb); RCU_INIT_POINTER(devdata, NULL); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); synchronize_rcu(); dev_set_drvdata(&viodev->dev, NULL); if (old_devdata) @@ -1257,11 +1257,11 @@ static void __exit nx842_pseries_exit(void) crypto_unregister_alg(&nx842_pseries_alg); - spin_lock_irqsave(&devdata_mutex, flags); + spin_lock_irqsave(&devdata_spinlock, flags); old_devdata = rcu_dereference_check(devdata, - lockdep_is_held(&devdata_mutex)); + lockdep_is_held(&devdata_spinlock)); RCU_INIT_POINTER(devdata, NULL); - spin_unlock_irqrestore(&devdata_mutex, flags); + spin_unlock_irqrestore(&devdata_spinlock, flags); synchronize_rcu(); if (old_devdata && old_devdata->dev) dev_set_drvdata(old_devdata->dev, NULL);