Merge tag 'soc-fsl-fix-v5.15-2' of git://git.kernel.org/pub/scm/linux…

…/kernel/git/leo/linux into arm/fixes

NXP/FSL SoC driver fixes for v5.15

DPAA2 DPIO driver
- replace smp_processor_id with raw_smp_processor_id to fix preempt
debug BUG
- use the combined functions to protect critical zone to fix deadlock

DPAA2 console
- free buffer before returning from dpaa2_console_read

* tag 'soc-fsl-fix-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
  soc: fsl: dpaa2-console: free buffer before returning from dpaa2_console_read
  soc: fsl: dpio: use the combined functions to protect critical zone
  soc: fsl: dpio: replace smp_processor_id with raw_smp_processor_id

Link: https://lore.kernel.org/r/20211026235744.19258-1-leoyang.li@nxp.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/soc/fsl/dpaa2-console.c

@@ -231,6 +231,7 @@ static ssize_t dpaa2_console_read(struct file *fp, char __user *buf,
 	cd->cur_ptr += bytes;
 	written += bytes;
 
+	kfree(kbuf);
 	return written;
 
 err_free_buf:

drivers/soc/fsl/dpio/dpio-service.c

@@ -59,7 +59,7 @@ static inline struct dpaa2_io *service_select_by_cpu(struct dpaa2_io *d,
 	 * potentially being migrated away.
 	 */
 	if (cpu < 0)
-		cpu = smp_processor_id();
+		cpu = raw_smp_processor_id();
 
 	/* If a specific cpu was requested, pick it up immediately */
 	return dpio_by_cpu[cpu];

drivers/soc/fsl/dpio/qbman-portal.c

@@ -732,8 +732,7 @@ int qbman_swp_enqueue_multiple_mem_back(struct qbman_swp *s,
 	int i, num_enqueued = 0;
 	unsigned long irq_flags;
 
-	spin_lock(&s->access_spinlock);
-	local_irq_save(irq_flags);
+	spin_lock_irqsave(&s->access_spinlock, irq_flags);
 
 	half_mask = (s->eqcr.pi_ci_mask>>1);
 	full_mask = s->eqcr.pi_ci_mask;
@@ -744,8 +743,7 @@ int qbman_swp_enqueue_multiple_mem_back(struct qbman_swp *s,
 		s->eqcr.available = qm_cyc_diff(s->eqcr.pi_ring_size,
 					eqcr_ci, s->eqcr.ci);
 		if (!s->eqcr.available) {
-			local_irq_restore(irq_flags);
-			spin_unlock(&s->access_spinlock);
+			spin_unlock_irqrestore(&s->access_spinlock, irq_flags);
 			return 0;
 		}
 	}
@@ -784,8 +782,7 @@ int qbman_swp_enqueue_multiple_mem_back(struct qbman_swp *s,
 	dma_wmb();
 	qbman_write_register(s, QBMAN_CINH_SWP_EQCR_PI,
 				(QB_RT_BIT)|(s->eqcr.pi)|s->eqcr.pi_vb);
-	local_irq_restore(irq_flags);
-	spin_unlock(&s->access_spinlock);
+	spin_unlock_irqrestore(&s->access_spinlock, irq_flags);
 
 	return num_enqueued;
 }