Message ID | 62feabccc304c32eba583d540c70d75a582a0f0b.1633339484.git.stefan@agner.ch |
---|---|
State | Accepted |
Commit | 30ac0b496b842ee38d941a3790c8c004f6275d04 |
Delegated to: | Tom Rini |
Headers | show |
Series | [v2] nvme: invalidate correct memory range after read | expand |
On Mon, Oct 04, 2021 at 11:24:51AM +0200, Stefan Agner wrote: > The current code invalidates the range after the read buffer since the > buffer pointer gets incremented in the read loop. Use a temporary > pointer to make sure we have a pristine pointer to invalidate the > correct memory range after read. > > Fixes: 704e040a51d2 ("nvme: Apply cache operations on the DMA buffers") > Reviewed-by: Andre Przywara <andre.przywara@arm.com> > Signed-off-by: Stefan Agner <stefan@agner.ch> Applied to u-boot/master, thanks!
diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c index f6465ea7f4..3c529a2fce 100644 --- a/drivers/nvme/nvme.c +++ b/drivers/nvme/nvme.c @@ -743,6 +743,7 @@ static ulong nvme_blk_rw(struct udevice *udev, lbaint_t blknr, u64 prp2; u64 total_len = blkcnt << desc->log2blksz; u64 temp_len = total_len; + uintptr_t temp_buffer = (uintptr_t)buffer; u64 slba = blknr; u16 lbas = 1 << (dev->max_transfer_shift - ns->lba_shift); @@ -770,19 +771,19 @@ static ulong nvme_blk_rw(struct udevice *udev, lbaint_t blknr, } if (nvme_setup_prps(dev, &prp2, - lbas << ns->lba_shift, (ulong)buffer)) + lbas << ns->lba_shift, temp_buffer)) return -EIO; c.rw.slba = cpu_to_le64(slba); slba += lbas; c.rw.length = cpu_to_le16(lbas - 1); - c.rw.prp1 = cpu_to_le64((ulong)buffer); + c.rw.prp1 = cpu_to_le64(temp_buffer); c.rw.prp2 = cpu_to_le64(prp2); status = nvme_submit_sync_cmd(dev->queues[NVME_IO_Q], &c, NULL, IO_TIMEOUT); if (status) break; temp_len -= (u32)lbas << ns->lba_shift; - buffer += lbas << ns->lba_shift; + temp_buffer += lbas << ns->lba_shift; } if (read)