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EDAC/altera: Delete an inappropriate dma_free_coherent() call

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commit ff2a66d21fd2364ed9396d151115eec59612b200 upstream.

dma_free_coherent() must only be called if the corresponding
dma_alloc_coherent() call has succeeded. Calling it when the allocation fails
leads to undefined behavior.

Delete the wrong call.

  [ bp: Massage commit message. ]

Fixes: 71bcada88b ("edac: altera: Add Altera SDRAM EDAC support")
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/aIrfzzqh4IzYtDVC@pc
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Salah Triki 2025-07-31 04:15:27 +01:00 • committed by Greg Kroah-Hartman
commit c97018c874
1 changed files with 0 additions and 1 deletions
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1
drivers/edac/altera_edac.c
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@ -125,7 +125,6 @@ static ssize_t altr_sdr_mc_err_inject_write(struct file *file,
ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL);
if (!ptemp) {
dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
edac_printk(KERN_ERR, EDAC_MC,
"Inject: Buffer Allocation error\n");
return -ENOMEM;