Hi Boris,
On Fri, Dec 11, 2015 at 9:10 AM, Boris Brezillon
<boris.brezillon@xxxxxxxxxxxxxxxxxx> wrote:
> + Dinh (who made commit 2a0a288ec258)
>
> Also added back the Fixes tag.
>
> On Fri, 11 Dec 2015 15:02:34 +0100
> Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> wrote:
>
>> Unregister the NAND device from the NAND subsystem when removing a denali
>> NAND controller, otherwise the MTD attached to the NAND device is still
>> exposed by the MTD layer, and accesses to this device will likely crash
>> the system.
>>
>> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
>
> Fixes: 2a0a288ec258 ("mtd: denali: split the generic driver and PCI layer")
>
>> ---
>> Changes since v4:
>> - remove Cc stable and fixes tags
>> - calculate the dma buffer size before calling nand_release()
>>
>> drivers/mtd/nand/denali.c | 6 ++++--
>> 1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
>> index 67eb2be..fdfea05 100644
>> --- a/drivers/mtd/nand/denali.c
>> +++ b/drivers/mtd/nand/denali.c
>> @@ -1622,9 +1622,11 @@ EXPORT_SYMBOL(denali_init);
>> /* driver exit point */
>> void denali_remove(struct denali_nand_info *denali)
>> {
>> + int bufsize = denali->mtd.writesize + denali->mtd.oobsize;
>> +
>> + nand_release(&denali->mtd);
>> denali_irq_cleanup(denali->irq, denali);
>> - dma_unmap_single(denali->dev, denali->buf.dma_buf,
>> - denali->mtd.writesize + denali->mtd.oobsize,
>> + dma_unmap_single(denali->dev, denali->buf.dma_buf, bufsize,
>> DMA_BIDIRECTIONAL);
Not sure what is the need to add bufsize here, but the commit message
doesn't reflect the change.
Dinh
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