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Subject: Re: [PATCH V3] ath10k: allocate small size dma memory in
 ath10k_pci_diag_write_mem
From: Kalle Valo <kvalo@codeaurora.org>
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Date: Sat, 13 Oct 2018 17:26:21 +0000 (UTC)
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To: Carl Huang <cjhuang@codeaurora.org>
Cc: linux-wireless@vger.kernel.org, ath10k@lists.infradead.org

Carl Huang <cjhuang@codeaurora.org> wrote:

> ath10k_pci_diag_write_mem may allocate big size of the dma memory
> based on the parameter nbytes. Take firmware diag download as
> example, the biggest size is about 500K. In some systems, the
> allocation is likely to fail because it can't acquire such a large
> contiguous dma memory.
> 
> The fix is to allocate a small size dma memory. In the loop,
> driver copies the data to the allocated dma memory and writes to
> the destination until all the data is written.
> 
> Tested with QCA6174 PCI with
> firmware-6.bin_WLAN.RM.4.4.1-00119-QCARMSWP-1, this also affects
> QCA9377 PCI.
> 
> Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
> Reviewed-by: Brian Norris <briannorris@chomium.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

Patch applied to ath-next branch of ath.git, thanks.

0738b4998c6d ath10k: allocate small size dma memory in ath10k_pci_diag_write_mem

-- 
https://patchwork.kernel.org/patch/10636245/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches


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