Race fixes in sdhci
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- v1 Latest0 of 2 patches 4 repliesIn review
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Cover letter [PATCH 0/2] Race fixes in sdhci
I've had this pair of patches sitting in my tree for a while now (I believe they were previously posted) providing stability improvements in sdhci on my systems. Having looked through the code I believe but have not confirmed that the issue is that the timeout is racing with an actual completion of a pending task - both paths will trigger the tasklet, and if you trigger a tasklet while it is running this causes it to be rescheduled. The result will be that the tasklet gets run a second time with no work pending for it.
I'm not convinced that these are the best fixes (it feels like we should instead be closing the races down) but I don't really have time to come up with something better myself right now so I'm pushing them out as-is for comment.
Ben Dooks (1):
MMC: SDHCI: Check mrq->cmd in sdhci_tasklet_finish
Dimitris Papastamos (1):
MMC: SDHCI: Check mrq != NULL in sdhci_tasklet_finish
drivers/mmc/host/sdhci.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)