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From: Todd Poynor <toddpoynor@gmail.com>
To: Rob Springer <rspringer@google.com>,
	John Joseph <jnjoseph@google.com>,
	Ben Chan <benchan@chromium.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
	Todd Poynor <toddpoynor@google.com>
Subject: [PATCH 16/16] staging: gasket: interrupt: remove unimplemented interrupt types
Date: Thu,  9 Aug 2018 20:21:11 -0700
Message-ID: <20180810032111.197743-17-toddpoynor@gmail.com> (raw)
In-Reply-To: <20180810032111.197743-1-toddpoynor@gmail.com>

From: Todd Poynor <toddpoynor@google.com>

Interrupt types PCI_MSI and PLATFORM_WIRE are unused and unimplemented.
Remove these.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
---
 drivers/staging/gasket/gasket_core.h      | 11 --------
 drivers/staging/gasket/gasket_interrupt.c | 34 +----------------------
 2 files changed, 1 insertion(+), 44 deletions(-)

diff --git a/drivers/staging/gasket/gasket_core.h b/drivers/staging/gasket/gasket_core.h
index fd7e75b765a6d..0203460f48957 100644
--- a/drivers/staging/gasket/gasket_core.h
+++ b/drivers/staging/gasket/gasket_core.h
@@ -50,8 +50,6 @@ enum gasket_interrupt_packing {
 /* Type of the interrupt supported by the device. */
 enum gasket_interrupt_type {
 	PCI_MSIX = 0,
-	PCI_MSI = 1,
-	PLATFORM_WIRE = 2,
 };
 
 /*
@@ -69,12 +67,6 @@ struct gasket_interrupt_desc {
 	int packing;
 };
 
-/* Offsets to the wire interrupt handling registers */
-struct gasket_wire_interrupt_offsets {
-	u64 pending_bit_array;
-	u64 mask_array;
-};
-
 /*
  * This enum is used to identify memory regions being part of the physical
  * memory that belongs to a device.
@@ -384,9 +376,6 @@ struct gasket_driver_desc {
 	 */
 	struct gasket_coherent_buffer_desc coherent_buffer_description;
 
-	/* Offset of wire interrupt registers. */
-	const struct gasket_wire_interrupt_offsets *wire_interrupt_offsets;
-
 	/* Interrupt type. (One of gasket_interrupt_type). */
 	int interrupt_type;
 
diff --git a/drivers/staging/gasket/gasket_interrupt.c b/drivers/staging/gasket/gasket_interrupt.c
index eb5dfbe08e214..2cd262be65ca0 100644
--- a/drivers/staging/gasket/gasket_interrupt.c
+++ b/drivers/staging/gasket/gasket_interrupt.c
@@ -45,9 +45,6 @@ struct gasket_interrupt_data {
 	/* The width of a single interrupt in a packed interrupt register. */
 	int pack_width;
 
-	/* offset of wire interrupt registers */
-	const struct gasket_wire_interrupt_offsets *wire_interrupt_offsets;
-
 	/*
 	 * Design-wise, these elements should be bundled together, but
 	 * pci_enable_msix's interface requires that they be managed
@@ -92,19 +89,6 @@ static void gasket_interrupt_setup(struct gasket_dev *gasket_dev)
 
 	dev_dbg(gasket_dev->dev, "Running interrupt setup\n");
 
-	if (interrupt_data->type == PLATFORM_WIRE ||
-	    interrupt_data->type == PCI_MSI) {
-		/* Nothing needs to be done for platform or PCI devices. */
-		return;
-	}
-
-	if (interrupt_data->type != PCI_MSIX) {
-		dev_dbg(gasket_dev->dev,
-			"Cannot handle unsupported interrupt type %d\n",
-			interrupt_data->type);
-		return;
-	}
-
 	/* Setup the MSIX table. */
 
 	for (i = 0; i < interrupt_data->num_interrupts; i++) {
@@ -351,8 +335,6 @@ int gasket_interrupt_init(struct gasket_dev *gasket_dev)
 	interrupt_data->interrupt_bar_index = driver_desc->interrupt_bar_index;
 	interrupt_data->pack_width = driver_desc->interrupt_pack_width;
 	interrupt_data->num_configured = 0;
-	interrupt_data->wire_interrupt_offsets =
-	    driver_desc->wire_interrupt_offsets;
 
 	interrupt_data->eventfd_ctxs = kcalloc(driver_desc->num_interrupts,
 					       sizeof(struct eventfd_ctx *),
@@ -379,12 +361,7 @@ int gasket_interrupt_init(struct gasket_dev *gasket_dev)
 		force_msix_interrupt_unmasking(gasket_dev);
 		break;
 
-	case PCI_MSI:
-	case PLATFORM_WIRE:
 	default:
-		dev_err(gasket_dev->dev,
-			"Cannot handle unsupported interrupt type %d\n",
-			interrupt_data->type);
 		ret = -EINVAL;
 	}
 
@@ -439,12 +416,7 @@ int gasket_interrupt_reinit(struct gasket_dev *gasket_dev)
 		force_msix_interrupt_unmasking(gasket_dev);
 		break;
 
-	case PCI_MSI:
-	case PLATFORM_WIRE:
 	default:
-		dev_dbg(gasket_dev->dev,
-			"Cannot handle unsupported interrupt type %d\n",
-			gasket_dev->interrupt_data->type);
 		ret = -EINVAL;
 	}
 
@@ -489,12 +461,8 @@ void gasket_interrupt_cleanup(struct gasket_dev *gasket_dev)
 		gasket_interrupt_msix_cleanup(interrupt_data);
 		break;
 
-	case PCI_MSI:
-	case PLATFORM_WIRE:
 	default:
-		dev_dbg(gasket_dev->dev,
-			"Cannot handle unsupported interrupt type %d\n",
-			interrupt_data->type);
+		break;
 	}
 
 	kfree(interrupt_data->interrupt_counts);
-- 
2.18.0.597.ga71716f1ad-goog


  parent reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-10  3:20 [PATCH 00/16] staging: gasket: return of the son of cleanups Todd Poynor
2018-08-10  3:20 ` [PATCH 01/16] MAINTAINERS: Switch a maintainer for drivers/staging/gasket Todd Poynor
2018-08-10  3:40   ` John Joseph
2018-08-10  6:14     ` Greg Kroah-Hartman
2018-08-10 10:28       ` Todd Poynor
2018-08-10  3:20 ` [PATCH 02/16] staging: gasket: core: remove debug log that could crash Todd Poynor
     [not found]   ` <CALTjKEM2q=pGh+nz6O7mQerkcnZ+=B6t+viu7dwfMHjZMQRXGg@mail.gmail.com>
2018-08-10 16:57     ` Rob Springer
2018-08-10  3:20 ` [PATCH 03/16] staging: gasket: core: fix line continuation indent in gasket_alloc_dev Todd Poynor
2018-08-10  3:20 ` [PATCH 04/16] staging: gasket: core: remove kobj_name param from gasket_alloc_dev Todd Poynor
2018-08-10  3:21 ` [PATCH 05/16] staging: gasket: core: remove ftrace-style debug logs Todd Poynor
2018-08-10  3:21 ` [PATCH 06/16] staging: gasket: remove gasket_exit() Todd Poynor
2018-08-10  3:21 ` [PATCH 07/16] staging: gasket: page table: remove unnecessary NULL check Todd Poynor
2018-08-10  3:21 ` [PATCH 08/16] staging: gasket: page table: use dma_mapping_error for error detection Todd Poynor
2018-08-10  3:21 ` [PATCH 09/16] staging: gasket: core: switch to relaxed memory-mapped I/O Todd Poynor
2018-08-10  3:21 ` [PATCH 10/16] staging: gasket: page table: remove extraneous memory barriers Todd Poynor
2018-08-10  3:21 ` [PATCH 11/16] staging: gasket: core: factor out generic device add code from PCI code Todd Poynor
2018-08-10  3:21 ` [PATCH 12/16] staging: gasket: core: factor out generic device remove code from PCI Todd Poynor
2018-08-10  3:21 ` [PATCH 13/16] staging: gasket: core: rename lookup_internal_desc to be PCI-specific Todd Poynor
2018-08-10  3:21 ` [PATCH 14/16] staging: gasket: interrupt: refactor PCI MSIX-specific handler code Todd Poynor
2018-08-10  3:21 ` [PATCH 15/16] staging: gasket: interrupt: simplify interrupt init parameters Todd Poynor
2018-08-10  3:21 ` Todd Poynor [this message]
2018-08-13  6:51 ` [PATCH 00/16] staging: gasket: return of the son of cleanups Christoph Hellwig

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