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2023-11-23 7d07b3ae8ddad407913c5301877e694430a3263f

 kernel/drivers/crypto/caam/qi.c
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@@ -84,13 +84,6 @@
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 #endif
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 /*
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- * CPU from where the module initialised. This is required because QMan driver
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- * requires CGRs to be removed from same CPU from where they were originally
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- * allocated.
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- */
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-static int mod_init_cpu;
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-
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-/*
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  * This is a a cache of buffers, from which the users of CAAM QI driver
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  * can allocate short (CAAM_QI_MEMCACHE_SIZE) buffers. It's faster than
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  * doing malloc on the hotpath.
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@@ -492,12 +485,11 @@
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 }
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 EXPORT_SYMBOL(caam_drv_ctx_rel);
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-int caam_qi_shutdown(struct device *qidev)
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+void caam_qi_shutdown(struct device *qidev)
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 {
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-	int i, ret;
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+	int i;
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 	struct caam_qi_priv *priv = dev_get_drvdata(qidev);
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 	const cpumask_t *cpus = qman_affine_cpus();
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-	struct cpumask old_cpumask = current->cpus_allowed;
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 	for_each_cpu(i, cpus) {
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 		struct napi_struct *irqtask;
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@@ -510,26 +502,12 @@
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 			dev_err(qidev, "Rsp FQ kill failed, cpu: %d\n", i);
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 	}
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-	/*
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-	 * QMan driver requires CGRs to be deleted from same CPU from where they
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-	 * were instantiated. Hence we get the module removal execute from the
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-	 * same CPU from where it was originally inserted.
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-	 */
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-	set_cpus_allowed_ptr(current, get_cpu_mask(mod_init_cpu));
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-
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-	ret = qman_delete_cgr(&priv->cgr);
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-	if (ret)
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-		dev_err(qidev, "Deletion of CGR failed: %d\n", ret);
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-	else
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-		qman_release_cgrid(priv->cgr.cgrid);
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+	qman_delete_cgr_safe(&priv->cgr);
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+	qman_release_cgrid(priv->cgr.cgrid);
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 	kmem_cache_destroy(qi_cache);
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-	/* Now that we're done with the CGRs, restore the cpus allowed mask */
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-	set_cpus_allowed_ptr(current, &old_cpumask);
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-
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 	platform_device_unregister(priv->qi_pdev);
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-	return ret;
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 }
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 static void cgr_cb(struct qman_portal *qm, struct qman_cgr *cgr, int congested)
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@@ -718,21 +696,10 @@
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 	struct device *ctrldev = &caam_pdev->dev, *qidev;
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 	struct caam_drv_private *ctrlpriv;
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 	const cpumask_t *cpus = qman_affine_cpus();
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-	struct cpumask old_cpumask = current->cpus_allowed;
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 	static struct platform_device_info qi_pdev_info = {
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 		.name = "caam_qi",
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 		.id = PLATFORM_DEVID_NONE
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 	};
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-
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-	/*
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-	 * QMAN requires CGRs to be removed from same CPU+portal from where it
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-	 * was originally allocated. Hence we need to note down the
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-	 * initialisation CPU and use the same CPU for module exit.
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-	 * We select the first CPU to from the list of portal owning CPUs.
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-	 * Then we pin module init to this CPU.
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-	 */
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-	mod_init_cpu = cpumask_first(cpus);
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-	set_cpus_allowed_ptr(current, get_cpu_mask(mod_init_cpu));
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 	qi_pdev_info.parent = ctrldev;
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 	qi_pdev_info.dma_mask = dma_get_mask(ctrldev);
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@@ -795,8 +762,6 @@
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 		return -ENOMEM;
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 	}
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-	/* Done with the CGRs; restore the cpus allowed mask */
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-	set_cpus_allowed_ptr(current, &old_cpumask);
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 #ifdef CONFIG_DEBUG_FS
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 	debugfs_create_file("qi_congested", 0444, ctrlpriv->ctl,
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 			    &times_congested, &caam_fops_u64_ro);