On 28.07.22 09:40, Tudor Ambarus wrote:
Every dma_map_single() call should have its dma_unmap_single() counterpart, because the DMA address space is a shared resource and one could render the machine unusable by consuming all DMA addresses.
Cc: stable@vger.kernel.org Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver") Signed-off-by: Tudor Ambarus tudor.ambarus@microchip.com
This afaics is missing the following tag:
Link: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@axentia.se...
These tags are considered important by Linus[1] and others, as they allow anyone to look into the backstory weeks or years from now. That is why they should be placed in cases like this, as Documentation/process/submitting-patches.rst and Documentation/process/5.Posting.rst explain in more detail. I care personally, because these tags make my regression tracking efforts a whole lot easier, as they allow my tracking bot 'regzbot' to automatically connect reports with patches posted or committed to fix tracked regressions.
[1] see for example: https://lore.kernel.org/all/CAHk-=wjMmSZzMJ3Xnskdg4+GGz=5p5p+GSYyFBTh0f-Dgvd... https://lore.kernel.org/all/CAHk-=wgs38ZrfPvy=nOwVkVzjpM3VFU1zobP37Fwd_h9iAD... https://lore.kernel.org/all/CAHk-=wjxzafG-=J8oT30s7upn4RhBs6TX-uVFZ5rME+L5_D...
Apropos regzbot, let me tell regzbot to monitor this thread:
#regzbot ^backmonitor: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@axentia.se...
Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
P.S.: As the Linux kernel's regression tracker I deal with a lot of reports and sometimes miss something important when writing mails like this. If that's the case here, don't hesitate to tell me in a public reply, it's in everyone's interest to set the public record straight.