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| author | Paolo Abeni <pabeni@redhat.com> | 2022-09-08 18:34:54 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-09-08 18:38:30 +0200 |
| commit | 9f8f1933dce555d3c246f447f54fca8de8889da9 (patch) | |
| tree | dc447d0174473de8385d47eb8aedc058a336e4a9 /drivers/bus/mhi/host/main.c | |
| parent | 75554fe00f941c3c3d9344e88708093a14d2b4b8 (diff) | |
| parent | 26b1224903b3fb66e8aa564868d0d57648c32b15 (diff) | |
| download | linux-9f8f1933dce555d3c246f447f54fca8de8889da9.tar.gz linux-9f8f1933dce555d3c246f447f54fca8de8889da9.tar.bz2 linux-9f8f1933dce555d3c246f447f54fca8de8889da9.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/freescale/fec.h
7d650df99d52 ("net: fec: add pm_qos support on imx6q platform")
40c79ce13b03 ("net: fec: add stop mode support for imx8 platform")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/bus/mhi/host/main.c')
| -rw-r--r-- | drivers/bus/mhi/host/main.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/bus/mhi/host/main.c b/drivers/bus/mhi/host/main.c index f3aef77a6a4a..df0fbfee7b78 100644 --- a/drivers/bus/mhi/host/main.c +++ b/drivers/bus/mhi/host/main.c @@ -430,12 +430,25 @@ irqreturn_t mhi_irq_handler(int irq_number, void *dev) { struct mhi_event *mhi_event = dev; struct mhi_controller *mhi_cntrl = mhi_event->mhi_cntrl; - struct mhi_event_ctxt *er_ctxt = - &mhi_cntrl->mhi_ctxt->er_ctxt[mhi_event->er_index]; + struct mhi_event_ctxt *er_ctxt; struct mhi_ring *ev_ring = &mhi_event->ring; - dma_addr_t ptr = le64_to_cpu(er_ctxt->rp); + dma_addr_t ptr; void *dev_rp; + /* + * If CONFIG_DEBUG_SHIRQ is set, the IRQ handler will get invoked during __free_irq() + * and by that time mhi_ctxt() would've freed. So check for the existence of mhi_ctxt + * before handling the IRQs. + */ + if (!mhi_cntrl->mhi_ctxt) { + dev_dbg(&mhi_cntrl->mhi_dev->dev, + "mhi_ctxt has been freed\n"); + return IRQ_HANDLED; + } + + er_ctxt = &mhi_cntrl->mhi_ctxt->er_ctxt[mhi_event->er_index]; + ptr = le64_to_cpu(er_ctxt->rp); + if (!is_valid_ring_ptr(ev_ring, ptr)) { dev_err(&mhi_cntrl->mhi_dev->dev, "Event ring rp points outside of the event ring\n"); |