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| author | Arnd Bergmann <arnd@arndb.de> | 2019-01-30 11:13:58 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-01-30 11:14:04 +0100 |
| commit | e22dc7be4c657a8733f96e45bcc5c26c95351ee9 (patch) | |
| tree | 90c309a4b8a925c2a12588eab94d12f2d025b9b4 /drivers/soc/fsl | |
| parent | Merge tag 'imx-fixes-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sh... (diff) | |
| parent | soc: fsl: qbman: avoid race in clearing QMan interrupt (diff) | |
| download | linux-e22dc7be4c657a8733f96e45bcc5c26c95351ee9.tar.xz linux-e22dc7be4c657a8733f96e45bcc5c26c95351ee9.zip | |
Merge tag 'soc-fsl-fix-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux into arm/fixes
soc/fsl fixes for v5.0
- qbman: avoid missing interrupts by only clearing processed events
* tag 'soc-fsl-fix-v5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
soc: fsl: qbman: avoid race in clearing QMan interrupt
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/soc/fsl')
| -rw-r--r-- | drivers/soc/fsl/qbman/qman.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c index 52c153cd795a..636f83f781f5 100644 --- a/drivers/soc/fsl/qbman/qman.c +++ b/drivers/soc/fsl/qbman/qman.c @@ -1143,18 +1143,19 @@ static void qm_mr_process_task(struct work_struct *work); static irqreturn_t portal_isr(int irq, void *ptr) { struct qman_portal *p = ptr; - - u32 clear = QM_DQAVAIL_MASK | p->irq_sources; u32 is = qm_in(&p->p, QM_REG_ISR) & p->irq_sources; + u32 clear = 0; if (unlikely(!is)) return IRQ_NONE; /* DQRR-handling if it's interrupt-driven */ - if (is & QM_PIRQ_DQRI) + if (is & QM_PIRQ_DQRI) { __poll_portal_fast(p, QMAN_POLL_LIMIT); + clear = QM_DQAVAIL_MASK | QM_PIRQ_DQRI; + } /* Handling of anything else that's interrupt-driven */ - clear |= __poll_portal_slow(p, is); + clear |= __poll_portal_slow(p, is) & QM_PIRQ_SLOW; qm_out(&p->p, QM_REG_ISR, clear); return IRQ_HANDLED; } |