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| author | David S. Miller <davem@davemloft.net> | 2015-08-28 06:45:31 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-28 06:45:31 +0200 |
| commit | 0d36938bb82a7775c21ce0a7429f08ba13d025b6 (patch) | |
| tree | f502caf5555591ee237e14e5fa96b2c005a85036 /drivers/block/mtip32xx/mtip32xx.c | |
| parent | Merge branch 'iff_no_queue_fixups' (diff) | |
| parent | Merge tag 'powerpc-4.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/po... (diff) | |
| download | linux-0d36938bb82a7775c21ce0a7429f08ba13d025b6.tar.xz linux-0d36938bb82a7775c21ce0a7429f08ba13d025b6.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/block/mtip32xx/mtip32xx.c')
| -rw-r--r-- | drivers/block/mtip32xx/mtip32xx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 4a2ef09e6704..f504232c1ee7 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3756,6 +3756,14 @@ static int mtip_init_cmd(void *data, struct request *rq, unsigned int hctx_idx, struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq); u32 host_cap_64 = readl(dd->mmio + HOST_CAP) & HOST_CAP_64; + /* + * For flush requests, request_idx starts at the end of the + * tag space. Since we don't support FLUSH/FUA, simply return + * 0 as there's nothing to be done. + */ + if (request_idx >= MTIP_MAX_COMMAND_SLOTS) + return 0; + cmd->command = dmam_alloc_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ, &cmd->command_dma, GFP_KERNEL); if (!cmd->command) |