Messages in this thread | | | From | Baolin Wang <> | Subject | [PATCH v2 0/3] Introduce the request_atomic() for the host | Date | Tue, 17 Mar 2020 18:14:08 +0800 |
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This patch set introduces a new request_atomic() interface for the MMC host controller, which is used to submit a request to host in the atomic context, such as in the irq hard handler, to reduce the request latency.
Any comments are welcome. Thanks.
Note: Adrian pointed out that it is not good if moving the polling of inhibit bits in sdhci_send_command() into the interrupt context, but now I have not found a better way to address Adrian's concern. Moveover this is an unusual abnormal case and the original code has the same problem, so I plan to create another patch set to talk about and fix this issue.
Changes from v1: - Re-split the changes to make them more clear suggested by Ulf. - Factor out the auto CMD23 checking into a separate function.
Baolin Wang (3): mmc: host: Introduce the request_atomic() for the host mmc: host: sdhci: Implement the request_atomic() API mmc: host: sdhci-sprd: Implement the request_atomic() API
drivers/mmc/host/mmc_hsq.c | 5 ++++- drivers/mmc/host/sdhci-sprd.c | 23 ++++++++++++++++++++--- drivers/mmc/host/sdhci.c | 27 +++++++++++++++++++-------- drivers/mmc/host/sdhci.h | 1 + include/linux/mmc/host.h | 3 +++ 5 files changed, 47 insertions(+), 12 deletions(-)
-- 1.9.1
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