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d66d24ac30
If we have a per CE (Copy Engine) IRQ then we have no summary register. Right now the code generates a summary register by iterating over all copy engines and seeing if they have an interrupt pending. This has a problem. Specifically if _none_ if the Copy Engines have an interrupt pending then they might go into low power mode and reading from their address space will cause a full system crash. This was seen to happen when two interrupts went off at nearly the same time. Both were handled by a single call of ath10k_snoc_napi_poll() but, because there were two interrupts handled and thus two calls to napi_schedule() there was still a second call to ath10k_snoc_napi_poll() which ran with no interrupts pending. Instead of iterating over all the copy engines, let's just keep track of the IRQs that fire. Then we can effectively generate our own summary without ever needing to read the Copy Engines. Tested-on: WCN3990 SNOC WLAN.HL.3.2.2-00490-QCAHLSWMTPL-1 Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Rakesh Pillai <pillair@codeaurora.org> Reviewed-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20200709082024.v2.1.I4d2f85ffa06f38532631e864a3125691ef5ffe06@changeid |
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| .. | ||
| ahb.c | ||
| ahb.h | ||
| bmi.c | ||
| bmi.h | ||
| ce.c | ||
| ce.h | ||
| core.c | ||
| core.h | ||
| coredump.c | ||
| coredump.h | ||
| debug.c | ||
| debug.h | ||
| debugfs_sta.c | ||
| hif.h | ||
| htc.c | ||
| htc.h | ||
| htt.c | ||
| htt.h | ||
| htt_rx.c | ||
| htt_tx.c | ||
| hw.c | ||
| hw.h | ||
| Kconfig | ||
| mac.c | ||
| mac.h | ||
| Makefile | ||
| p2p.c | ||
| p2p.h | ||
| pci.c | ||
| pci.h | ||
| qmi.c | ||
| qmi.h | ||
| qmi_wlfw_v01.c | ||
| qmi_wlfw_v01.h | ||
| rx_desc.h | ||
| sdio.c | ||
| sdio.h | ||
| snoc.c | ||
| snoc.h | ||
| spectral.c | ||
| spectral.h | ||
| swap.c | ||
| swap.h | ||
| targaddrs.h | ||
| testmode.c | ||
| testmode.h | ||
| testmode_i.h | ||
| thermal.c | ||
| thermal.h | ||
| trace.c | ||
| trace.h | ||
| txrx.c | ||
| txrx.h | ||
| usb.c | ||
| usb.h | ||
| wmi-ops.h | ||
| wmi-tlv.c | ||
| wmi-tlv.h | ||
| wmi.c | ||
| wmi.h | ||
| wow.c | ||
| wow.h | ||