From: Christophe JAILLET christophe.jaillet@wanadoo.fr
stable inclusion from stable-v5.10.137 commit 2593f971f0436a67d1c377a42e33526335cd9c16 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 44fd1917314e9d4f53dd95dd65df1c152f503d3a ]
If an error occurs after a successful idr_alloc() call, the corresponding resource must be released with idr_remove() as already done in the .remove function.
Update the error handling path to add the missing idr_remove() call.
Fixes: ada8a8a13b13 ("mfd: Add realtek pcie card reader driver") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Link: https://lore.kernel.org/r/e8dc41716cbf52fb37a12e70d8972848e69df6d6.165527121... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Wei Li liwei391@huawei.com --- drivers/misc/cardreader/rtsx_pcr.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c index 5d15607027e9..358b000b3a55 100644 --- a/drivers/misc/cardreader/rtsx_pcr.c +++ b/drivers/misc/cardreader/rtsx_pcr.c @@ -1529,7 +1529,7 @@ static int rtsx_pci_probe(struct pci_dev *pcidev, pcr->remap_addr = ioremap(base, len); if (!pcr->remap_addr) { ret = -ENOMEM; - goto free_handle; + goto free_idr; }
pcr->rtsx_resv_buf = dma_alloc_coherent(&(pcidev->dev), @@ -1591,6 +1591,10 @@ static int rtsx_pci_probe(struct pci_dev *pcidev, pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr); unmap: iounmap(pcr->remap_addr); +free_idr: + spin_lock(&rtsx_pci_lock); + idr_remove(&rtsx_pci_idr, pcr->id); + spin_unlock(&rtsx_pci_lock); free_handle: kfree(handle); free_pcr: