Linux-libre 4.3.2-gnu

1 files changed, 33 insertions, 19 deletions

diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c
index 680cd2634..09a406058 100644
--- a/drivers/misc/cxl/irq.c
+++ b/drivers/misc/cxl/irq.c
@@ -30,12 +30,12 @@ static irqreturn_t handle_psl_slice_error(struct cxl_context *ctx, u64 dsisr, u6
 	serr = cxl_p1n_read(ctx->afu, CXL_PSL_SERR_An);
 	afu_debug = cxl_p1n_read(ctx->afu, CXL_AFU_DEBUG_An);
 
-	dev_crit(&ctx->afu->dev, "PSL ERROR STATUS: 0x%.16llx\n", errstat);
-	dev_crit(&ctx->afu->dev, "PSL_FIR1: 0x%.16llx\n", fir1);
-	dev_crit(&ctx->afu->dev, "PSL_FIR2: 0x%.16llx\n", fir2);
-	dev_crit(&ctx->afu->dev, "PSL_SERR_An: 0x%.16llx\n", serr);
-	dev_crit(&ctx->afu->dev, "PSL_FIR_SLICE_An: 0x%.16llx\n", fir_slice);
-	dev_crit(&ctx->afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%.16llx\n", afu_debug);
+	dev_crit(&ctx->afu->dev, "PSL ERROR STATUS: 0x%016llx\n", errstat);
+	dev_crit(&ctx->afu->dev, "PSL_FIR1: 0x%016llx\n", fir1);
+	dev_crit(&ctx->afu->dev, "PSL_FIR2: 0x%016llx\n", fir2);
+	dev_crit(&ctx->afu->dev, "PSL_SERR_An: 0x%016llx\n", serr);
+	dev_crit(&ctx->afu->dev, "PSL_FIR_SLICE_An: 0x%016llx\n", fir_slice);
+	dev_crit(&ctx->afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%016llx\n", afu_debug);
 
 	dev_crit(&ctx->afu->dev, "STOPPING CXL TRACE\n");
 	cxl_stop_trace(ctx->afu->adapter);
@@ -54,10 +54,10 @@ irqreturn_t cxl_slice_irq_err(int irq, void *data)
 	fir_slice = cxl_p1n_read(afu, CXL_PSL_FIR_SLICE_An);
 	errstat = cxl_p2n_read(afu, CXL_PSL_ErrStat_An);
 	afu_debug = cxl_p1n_read(afu, CXL_AFU_DEBUG_An);
-	dev_crit(&afu->dev, "PSL_SERR_An: 0x%.16llx\n", serr);
-	dev_crit(&afu->dev, "PSL_FIR_SLICE_An: 0x%.16llx\n", fir_slice);
-	dev_crit(&afu->dev, "CXL_PSL_ErrStat_An: 0x%.16llx\n", errstat);
-	dev_crit(&afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%.16llx\n", afu_debug);
+	dev_crit(&afu->dev, "PSL_SERR_An: 0x%016llx\n", serr);
+	dev_crit(&afu->dev, "PSL_FIR_SLICE_An: 0x%016llx\n", fir_slice);
+	dev_crit(&afu->dev, "CXL_PSL_ErrStat_An: 0x%016llx\n", errstat);
+	dev_crit(&afu->dev, "CXL_PSL_AFU_DEBUG_An: 0x%016llx\n", afu_debug);
 
 	cxl_p1n_write(afu, CXL_PSL_SERR_An, serr);
 
@@ -72,7 +72,7 @@ static irqreturn_t cxl_irq_err(int irq, void *data)
 	WARN(1, "CXL ERROR interrupt %i\n", irq);
 
 	err_ivte = cxl_p1_read(adapter, CXL_PSL_ErrIVTE);
-	dev_crit(&adapter->dev, "PSL_ErrIVTE: 0x%.16llx\n", err_ivte);
+	dev_crit(&adapter->dev, "PSL_ErrIVTE: 0x%016llx\n", err_ivte);
 
 	dev_crit(&adapter->dev, "STOPPING CXL TRACE\n");
 	cxl_stop_trace(adapter);
@@ -80,7 +80,7 @@ static irqreturn_t cxl_irq_err(int irq, void *data)
 	fir1 = cxl_p1_read(adapter, CXL_PSL_FIR1);
 	fir2 = cxl_p1_read(adapter, CXL_PSL_FIR2);
 
-	dev_crit(&adapter->dev, "PSL_FIR1: 0x%.16llx\nPSL_FIR2: 0x%.16llx\n", fir1, fir2);
+	dev_crit(&adapter->dev, "PSL_FIR1: 0x%016llx\nPSL_FIR2: 0x%016llx\n", fir1, fir2);
 
 	return IRQ_HANDLED;
 }
@@ -147,7 +147,7 @@ static irqreturn_t cxl_irq(int irq, void *data, struct cxl_irq_info *irq_info)
 	if (dsisr & CXL_PSL_DSISR_An_PE)
 		return handle_psl_slice_error(ctx, dsisr, irq_info->errstat);
 	if (dsisr & CXL_PSL_DSISR_An_AE) {
-		pr_devel("CXL interrupt: AFU Error %.llx\n", irq_info->afu_err);
+		pr_devel("CXL interrupt: AFU Error 0x%016llx\n", irq_info->afu_err);
 
 		if (ctx->pending_afu_err) {
 			/*
@@ -158,7 +158,7 @@ static irqreturn_t cxl_irq(int irq, void *data, struct cxl_irq_info *irq_info)
 			 * probably best that we log them somewhere:
 			 */
 			dev_err_ratelimited(&ctx->afu->dev, "CXL AFU Error "
-					    "undelivered to pe %i: %.llx\n",
+					    "undelivered to pe %i: 0x%016llx\n",
 					    ctx->pe, irq_info->afu_err);
 		} else {
 			spin_lock(&ctx->lock);
@@ -211,8 +211,8 @@ static irqreturn_t cxl_irq_multiplexed(int irq, void *data)
 	}
 	rcu_read_unlock();
 
-	WARN(1, "Unable to demultiplex CXL PSL IRQ for PE %i DSISR %.16llx DAR"
-		" %.16llx\n(Possible AFU HW issue - was a term/remove acked"
+	WARN(1, "Unable to demultiplex CXL PSL IRQ for PE %i DSISR %016llx DAR"
+		" %016llx\n(Possible AFU HW issue - was a term/remove acked"
 		" with outstanding transactions?)\n", ph, irq_info.dsisr,
 		irq_info.dar);
 	return fail_psl_irq(afu, &irq_info);
@@ -341,6 +341,9 @@ int cxl_register_psl_err_irq(struct cxl *adapter)
 
 void cxl_release_psl_err_irq(struct cxl *adapter)
 {
+	if (adapter->err_virq != irq_find_mapping(NULL, adapter->err_hwirq))
+		return;
+
 	cxl_p1_write(adapter, CXL_PSL_ErrIVTE, 0x0000000000000000);
 	cxl_unmap_irq(adapter->err_virq, adapter);
 	cxl_release_one_irq(adapter, adapter->err_hwirq);
@@ -374,6 +377,9 @@ int cxl_register_serr_irq(struct cxl_afu *afu)
 
 void cxl_release_serr_irq(struct cxl_afu *afu)
 {
+	if (afu->serr_virq != irq_find_mapping(NULL, afu->serr_hwirq))
+		return;
+
 	cxl_p1n_write(afu, CXL_PSL_SERR_An, 0x0000000000000000);
 	cxl_unmap_irq(afu->serr_virq, afu);
 	cxl_release_one_irq(afu->adapter, afu->serr_hwirq);
@@ -400,6 +406,9 @@ int cxl_register_psl_irq(struct cxl_afu *afu)
 
 void cxl_release_psl_irq(struct cxl_afu *afu)
 {
+	if (afu->psl_virq != irq_find_mapping(NULL, afu->psl_hwirq))
+		return;
+
 	cxl_unmap_irq(afu->psl_virq, afu);
 	cxl_release_one_irq(afu->adapter, afu->psl_hwirq);
 	kfree(afu->psl_irq_name);
@@ -421,6 +430,9 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
 	int rc, r, i, j = 1;
 	struct cxl_irq_name *irq_name;
 
+	/* Initialize the list head to hold irq names */
+	INIT_LIST_HEAD(&ctx->irq_names);
+
 	if ((rc = cxl_alloc_irq_ranges(&ctx->irqs, ctx->afu->adapter, count)))
 		return rc;
 
@@ -432,13 +444,12 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
 	ctx->irq_bitmap = kcalloc(BITS_TO_LONGS(count),
 				  sizeof(*ctx->irq_bitmap), GFP_KERNEL);
 	if (!ctx->irq_bitmap)
-		return -ENOMEM;
+		goto out;
 
 	/*
 	 * Allocate names first.  If any fail, bail out before allocating
 	 * actual hardware IRQs.
 	 */
-	INIT_LIST_HEAD(&ctx->irq_names);
 	for (r = 1; r < CXL_IRQ_RANGES; r++) {
 		for (i = 0; i < ctx->irqs.range[r]; i++) {
 			irq_name = kmalloc(sizeof(struct cxl_irq_name),
@@ -460,11 +471,12 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
 	return 0;
 
 out:
+	cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter);
 	afu_irq_name_free(ctx);
 	return -ENOMEM;
 }
 
-void afu_register_hwirqs(struct cxl_context *ctx)
+static void afu_register_hwirqs(struct cxl_context *ctx)
 {
 	irq_hw_number_t hwirq;
 	struct cxl_irq_name *irq_name;
@@ -511,4 +523,6 @@ void afu_release_irqs(struct cxl_context *ctx, void *cookie)
 
 	afu_irq_name_free(ctx);
 	cxl_release_irq_ranges(&ctx->irqs, ctx->afu->adapter);
+
+	ctx->irq_count = 0;
 }