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authorChristoph Hellwig <hch@lst.de>2019-01-14 23:23:30 +0300
committerJens Axboe <axboe@kernel.dk>2019-01-31 22:50:12 +0300
commit22cb4e681523b35f1a0eba40c25ddc1b16898801 (patch)
tree26fef09e0dfa9bfebb896acee4bf577bc1fb19c5 /drivers/block
parentf17b5f06cb92ef2250513a1e154c47b78df07d40 (diff)
downloadlinux-22cb4e681523b35f1a0eba40c25ddc1b16898801.tar.xz
mtip32xx: ѕtop abusing the managed resource APIs
The mtip32xx driver uses managed resources for DMA coherent memory and irqs, but then always pairs them with free calls anyway, making the resource tracking rather pointless. Given some DMA allocations are transient anyway, the irq freeing seems to require ordering vs other hardware access the best solution seems to be to stop using the managed resource API entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/mtip32xx/mtip32xx.c37
1 files changed, 16 insertions, 21 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 88e8440e75c3..9a6f40cd8df6 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1415,7 +1415,7 @@ static blk_status_t mtip_send_trim(struct driver_data *dd, unsigned int lba,
WARN_ON(sizeof(struct mtip_trim) > ATA_SECT_SIZE);
/* Allocate a DMA buffer for the trim structure */
- buf = dmam_alloc_coherent(&dd->pdev->dev, ATA_SECT_SIZE, &dma_addr,
+ buf = dma_alloc_coherent(&dd->pdev->dev, ATA_SECT_SIZE, &dma_addr,
GFP_KERNEL);
if (!buf)
return BLK_STS_RESOURCE;
@@ -1452,7 +1452,7 @@ static blk_status_t mtip_send_trim(struct driver_data *dd, unsigned int lba,
MTIP_TRIM_TIMEOUT_MS) < 0)
ret = BLK_STS_IOERR;
- dmam_free_coherent(&dd->pdev->dev, ATA_SECT_SIZE, buf, dma_addr);
+ dma_free_coherent(&dd->pdev->dev, ATA_SECT_SIZE, buf, dma_addr);
return ret;
}
@@ -1655,7 +1655,7 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
if (!user_buffer)
return -EFAULT;
- buf = dmam_alloc_coherent(&port->dd->pdev->dev,
+ buf = dma_alloc_coherent(&port->dd->pdev->dev,
ATA_SECT_SIZE * xfer_sz,
&dma_addr,
GFP_KERNEL);
@@ -1733,7 +1733,7 @@ static int exec_drive_command(struct mtip_port *port, u8 *command,
}
exit_drive_command:
if (buf)
- dmam_free_coherent(&port->dd->pdev->dev,
+ dma_free_coherent(&port->dd->pdev->dev,
ATA_SECT_SIZE * xfer_sz, buf, dma_addr);
return rv;
}
@@ -2837,11 +2837,11 @@ static void mtip_dma_free(struct driver_data *dd)
struct mtip_port *port = dd->port;
if (port->block1)
- dmam_free_coherent(&dd->pdev->dev, BLOCK_DMA_ALLOC_SZ,
+ dma_free_coherent(&dd->pdev->dev, BLOCK_DMA_ALLOC_SZ,
port->block1, port->block1_dma);
if (port->command_list) {
- dmam_free_coherent(&dd->pdev->dev, AHCI_CMD_TBL_SZ,
+ dma_free_coherent(&dd->pdev->dev, AHCI_CMD_TBL_SZ,
port->command_list, port->command_list_dma);
}
}
@@ -2860,7 +2860,7 @@ static int mtip_dma_alloc(struct driver_data *dd)
/* Allocate dma memory for RX Fis, Identify, and Sector Bufffer */
port->block1 =
- dmam_alloc_coherent(&dd->pdev->dev, BLOCK_DMA_ALLOC_SZ,
+ dma_alloc_coherent(&dd->pdev->dev, BLOCK_DMA_ALLOC_SZ,
&port->block1_dma, GFP_KERNEL);
if (!port->block1)
return -ENOMEM;
@@ -2868,10 +2868,10 @@ static int mtip_dma_alloc(struct driver_data *dd)
/* Allocate dma memory for command list */
port->command_list =
- dmam_alloc_coherent(&dd->pdev->dev, AHCI_CMD_TBL_SZ,
+ dma_alloc_coherent(&dd->pdev->dev, AHCI_CMD_TBL_SZ,
&port->command_list_dma, GFP_KERNEL);
if (!port->command_list) {
- dmam_free_coherent(&dd->pdev->dev, BLOCK_DMA_ALLOC_SZ,
+ dma_free_coherent(&dd->pdev->dev, BLOCK_DMA_ALLOC_SZ,
port->block1, port->block1_dma);
port->block1 = NULL;
port->block1_dma = 0;
@@ -3056,13 +3056,8 @@ static int mtip_hw_init(struct driver_data *dd)
mtip_start_port(dd->port);
/* Setup the ISR and enable interrupts. */
- rv = devm_request_irq(&dd->pdev->dev,
- dd->pdev->irq,
- mtip_irq_handler,
- IRQF_SHARED,
- dev_driver_string(&dd->pdev->dev),
- dd);
-
+ rv = request_irq(dd->pdev->irq, mtip_irq_handler, IRQF_SHARED,
+ dev_driver_string(&dd->pdev->dev), dd);
if (rv) {
dev_err(&dd->pdev->dev,
"Unable to allocate IRQ %d\n", dd->pdev->irq);
@@ -3090,7 +3085,7 @@ out3:
/* Release the IRQ. */
irq_set_affinity_hint(dd->pdev->irq, NULL);
- devm_free_irq(&dd->pdev->dev, dd->pdev->irq, dd);
+ free_irq(dd->pdev->irq, dd);
out2:
mtip_deinit_port(dd->port);
@@ -3145,7 +3140,7 @@ static int mtip_hw_exit(struct driver_data *dd)
/* Release the IRQ. */
irq_set_affinity_hint(dd->pdev->irq, NULL);
- devm_free_irq(&dd->pdev->dev, dd->pdev->irq, dd);
+ free_irq(dd->pdev->irq, dd);
msleep(1000);
/* Free dma regions */
@@ -3609,8 +3604,8 @@ static void mtip_free_cmd(struct blk_mq_tag_set *set, struct request *rq,
if (!cmd->command)
return;
- dmam_free_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ,
- cmd->command, cmd->command_dma);
+ dma_free_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ, cmd->command,
+ cmd->command_dma);
}
static int mtip_init_cmd(struct blk_mq_tag_set *set, struct request *rq,
@@ -3619,7 +3614,7 @@ static int mtip_init_cmd(struct blk_mq_tag_set *set, struct request *rq,
struct driver_data *dd = set->driver_data;
struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq);
- cmd->command = dmam_alloc_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ,
+ cmd->command = dma_alloc_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ,
&cmd->command_dma, GFP_KERNEL);
if (!cmd->command)
return -ENOMEM;