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Groups > linux.kernel > #1723941
| From | Adrian Hunter <adrian.hunter@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on enabling legacy IRQs on CQE halt |
| Date | 2017-08-31 09:50 +0200 |
| Message-ID | <uksoG-2N0-21@gated-at.bofh.it> (permalink) |
| References | <ukaUN-i2-1@gated-at.bofh.it> <ukaUP-i2-35@gated-at.bofh.it> |
| Organization | Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki |
On 30/08/17 16:04, Ritesh Harjani wrote:
> There is a case when enabling the legacy IRQs and halting CQE is
> resuling into a command response interrupt without any command in
> progress. This patch handles such case here.
>
> Error signature without this patch:-
> mmc0: Got command interrupt 0x00000001 even though no command operation
> was in progress.
>
> Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
Seems fine, but this is a necessary part of enabling i.e. put all the
sdhci-msm changes into one patch.
> ---
> drivers/mmc/host/sdhci-msm.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index baa3409..8fdc2c0 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -1124,10 +1124,21 @@ void sdhci_msm_cqe_enable(struct mmc_host *mmc)
> void sdhci_msm_cqe_disable(struct mmc_host *mmc, bool recovery)
> {
> struct sdhci_host *host = mmc_priv(mmc);
> + unsigned long flags;
> + u32 ctrl;
>
> if (host->flags & SDHCI_USE_64_BIT_DMA)
> host->desc_sz = 16;
>
> + spin_lock_irqsave(&host->lock, flags);
> +
Could use a comment here.
> + ctrl = sdhci_readl(host, SDHCI_INT_ENABLE);
> + ctrl |= SDHCI_INT_RESPONSE;
> + sdhci_writel(host, ctrl, SDHCI_INT_ENABLE);
> + sdhci_writel(host, SDHCI_INT_RESPONSE, SDHCI_INT_STATUS);
> +
> + spin_unlock_irqrestore(&host->lock, flags);
> +
> sdhci_cqe_disable(mmc, recovery);
> }
>
>
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[RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
[RFC 2/4] mmc: sdhci-msm: Add CQHCI support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
Re: [RFC 2/4] mmc: sdhci-msm: Add CQHCI support for sdhci-msm Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 09:40 +0200
Re: [RFC 2/4] mmc: sdhci-msm: Add CQHCI support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
[RFC 3/4] mmc: sdhci-msm: Change the desc_sz on cqe_enable/disable. Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
Re: [RFC 3/4] mmc: sdhci-msm: Change the desc_sz on cqe_enable/disable. Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 08:50 +0200
Re: [RFC 3/4] mmc: sdhci-msm: Change the desc_sz on cqe_enable/disable. Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
[RFC 1/4] mmc: cqhci: Move CQHCI_ENABLE before setting TDLBA/TDLBAU Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
Re: [RFC 1/4] mmc: cqhci: Move CQHCI_ENABLE before setting TDLBA/TDLBAU Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 08:20 +0200
Re: [RFC 1/4] mmc: cqhci: Move CQHCI_ENABLE before setting TDLBA/TDLBAU Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:10 +0200
[RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on enabling legacy IRQs on CQE halt Ritesh Harjani <riteshh@codeaurora.org> - 2017-08-30 15:10 +0200
Re: [RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on enabling legacy IRQs on CQE halt Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 09:50 +0200
Re: [RFC 4/4] mmc: sdhci-msm: Handle unexpected interrupt case on enabling legacy IRQs on CQE halt Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
Re: [RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Adrian Hunter <adrian.hunter@intel.com> - 2017-08-31 10:50 +0200
Re: [RFC 0/4] mmc: sdhci-msm: Add CQE support for sdhci-msm Ritesh Harjani <riteshh@codeaurora.org> - 2017-09-02 07:20 +0200
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