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crypto: ccp - Use only the relevant interrupt bits 

Each CCP queue can product interrupts for 4 conditions:
operation complete, queue empty, error, and queue stopped.
This driver only works with completion and error events.

Cc: <stable@vger.kernel.org> # 4.9.x+

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gary R Hook 2017-04-20 15:24:09 -05:00 committed by Herbert Xu
parent 7701d1ff8e
commit 56467cb11c
2 changed files with 7 additions and 7 deletions
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9
drivers/crypto/ccp/ccp-dev-v5.c
View File

@ -801,7 +801,7 @@ static int ccp5_init(struct ccp_device *ccp)
ioread32(cmd_q->reg_status);
/* Clear the interrupts */
iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_interrupt_status);
}
dev_dbg(dev, "Requesting an IRQ...\n");
@ -882,7 +882,7 @@ static int ccp5_init(struct ccp_device *ccp)
/* Enable interrupts */
for (i = 0; i < ccp->cmd_q_count; i++) {
cmd_q = &ccp->cmd_q[i];
iowrite32(ALL_INTERRUPTS, cmd_q->reg_int_enable);
iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_int_enable);
}
dev_dbg(dev, "Registering device...\n");
@ -942,7 +942,7 @@ static void ccp5_destroy(struct ccp_device *ccp)
iowrite32(cmd_q->qcontrol & ~CMD5_Q_RUN, cmd_q->reg_control);
/* Disable the interrupts */
iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
iowrite32(SUPPORTED_INTERRUPTS, cmd_q->reg_interrupt_status);
/* Clear the interrupt status */
iowrite32(0x00, cmd_q->reg_int_enable);
@ -1002,7 +1002,8 @@ static irqreturn_t ccp5_irq_handler(int irq, void *data)
cmd_q->int_rcvd = 1;
/* Acknowledge the interrupt and wake the kthread */
iowrite32(ALL_INTERRUPTS, cmd_q->reg_interrupt_status);
iowrite32(SUPPORTED_INTERRUPTS,
cmd_q->reg_interrupt_status);
wake_up_interruptible(&cmd_q->int_queue);
}
}

5
drivers/crypto/ccp/ccp-dev.h
View File

@ -109,9 +109,8 @@
#define INT_COMPLETION 0x1
#define INT_ERROR 0x2
#define INT_QUEUE_STOPPED 0x4
#define ALL_INTERRUPTS (INT_COMPLETION| \
INT_ERROR| \
INT_QUEUE_STOPPED)
#define INT_EMPTY_QUEUE 0x8
#define SUPPORTED_INTERRUPTS (INT_COMPLETION | INT_ERROR)
#define LSB_REGION_WIDTH 5
#define MAX_LSB_CNT 8