diff options
Diffstat (limited to 'drivers/crypto/talitos.c')
| -rw-r--r-- | drivers/crypto/talitos.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index c429f684c79..b5c2c9340a9 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -319,9 +319,11 @@ static void flush_channel(struct device *dev, int ch, int error, int reset_ch) /* descriptors with their done bits set don't get the error */ rmb(); - if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE) + if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE) { status = 0; - else + /* Ack each pkt completed on channel */ + out_be32(priv->reg + TALITOS_ICR, (1 << (ch * 2))); + } else if (!error) break; else @@ -369,6 +371,11 @@ static void talitos_done(unsigned long data) for (ch = 0; ch < priv->num_channels; ch++) flush_channel(dev, ch, 0, 0); + + /* At this point, all completed channels have been processed. + * Unmask done interrupts for channels completed later on. + */ + setbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_DONE); } /* @@ -557,15 +564,22 @@ static irqreturn_t talitos_interrupt(int irq, void *data) isr = in_be32(priv->reg + TALITOS_ISR); isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); - /* ack */ - out_be32(priv->reg + TALITOS_ICR, isr); - out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); + if (unlikely((isr & ~TALITOS_ISR_CHDONE) || isr_lo)) { + /* + * Acknowledge error interrupts here. + * Done interrupts are ack'ed as part of done_task. + */ + out_be32(priv->reg + TALITOS_ICR, isr); + out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); - if (unlikely((isr & ~TALITOS_ISR_CHDONE) || isr_lo)) talitos_error((unsigned long)data, isr, isr_lo); - else - if (likely(isr & TALITOS_ISR_CHDONE)) + } else + if (likely(isr & TALITOS_ISR_CHDONE)) { + /* mask further done interrupts. */ + clrbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_DONE); + /* done_task will unmask done interrupts at exit */ tasklet_schedule(&priv->done_task); + } return (isr || isr_lo) ? IRQ_HANDLED : IRQ_NONE; } |