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MMC core: 

- Fix use-after-free issue for rpmb partition
 
 MMC host
  - Fix quirk for broken CQE support
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Merge tag 'mmc-v5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix use-after-free issue for rpmb partition

  MMC host:
   - Fix quirk for broken CQE support"

* tag 'mmc-v5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: block: Fix use-after-free issue for rpmb
  mmc: sdhci: Fix SDHCI_QUIRK_BROKEN_CQE
This commit is contained in:
Linus Torvalds 2020-05-29 13:34:01 -07:00
parent d54b64ef0d 202500d216
commit 411ea6790e
2 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mmc/core/block.c
View File

@ -2484,8 +2484,8 @@ static int mmc_rpmb_chrdev_release(struct inode *inode, struct file *filp)
struct mmc_rpmb_data *rpmb = container_of(inode->i_cdev,
struct mmc_rpmb_data, chrdev);
put_device(&rpmb->dev);
mmc_blk_put(rpmb->md);
put_device(&rpmb->dev);
return 0;
}

9
drivers/mmc/host/sdhci.c
View File

@ -4000,9 +4000,6 @@ int sdhci_setup_host(struct sdhci_host *host)
mmc_hostname(mmc), host->version);
}
if (host->quirks & SDHCI_QUIRK_BROKEN_CQE)
mmc->caps2 &= ~MMC_CAP2_CQE;
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
else if (!(host->caps & SDHCI_CAN_DO_SDMA))
@ -4539,6 +4536,12 @@ int __sdhci_add_host(struct sdhci_host *host)
struct mmc_host *mmc = host->mmc;
int ret;
if ((mmc->caps2 & MMC_CAP2_CQE) &&
(host->quirks & SDHCI_QUIRK_BROKEN_CQE)) {
mmc->caps2 &= ~MMC_CAP2_CQE;
mmc->cqe_ops = NULL;
}
host->complete_wq = alloc_workqueue("sdhci", flags, 0);
if (!host->complete_wq)
return -ENOMEM;