From 7eb344f8731a0327155814f387984dedb1df032a Mon Sep 17 00:00:00 2001 From: Scott Feldman Date: Wed, 25 Feb 2015 20:15:36 -0800 Subject: [PATCH] rocker: fix non-portable err return codes The rocker device returns error codes if something goes wrong with descriptor processing. Originally the device used standard errno codes for different errors, but since those errno codes aren't portable across ARCHs, the device now returns hard-coded error codes that stay constant across diff ARCHs. Fix driver to use those same hard-coded values. Signed-off-by: Scott Feldman Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/ethernet/rocker/rocker.c | 25 ++++++++++++++++++++++++- drivers/net/ethernet/rocker/rocker.h | 13 +++++++++++++ 2 files changed, 37 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c index 34389b6aa67c..61f2ef4dfa8d 100644 --- a/drivers/net/ethernet/rocker/rocker.c +++ b/drivers/net/ethernet/rocker/rocker.c @@ -789,7 +789,30 @@ static u32 __pos_inc(u32 pos, size_t limit) static int rocker_desc_err(struct rocker_desc_info *desc_info) { - return -(desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN); + int err = desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN; + + switch (err) { + case ROCKER_OK: + return 0; + case -ROCKER_ENOENT: + return -ENOENT; + case -ROCKER_ENXIO: + return -ENXIO; + case -ROCKER_ENOMEM: + return -ENOMEM; + case -ROCKER_EEXIST: + return -EEXIST; + case -ROCKER_EINVAL: + return -EINVAL; + case -ROCKER_EMSGSIZE: + return -EMSGSIZE; + case -ROCKER_ENOTSUP: + return -EOPNOTSUPP; + case -ROCKER_ENOBUFS: + return -ENOBUFS; + } + + return -EINVAL; } static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info) diff --git a/drivers/net/ethernet/rocker/rocker.h b/drivers/net/ethernet/rocker/rocker.h index a5bc432feada..76e79ede617f 100644 --- a/drivers/net/ethernet/rocker/rocker.h +++ b/drivers/net/ethernet/rocker/rocker.h @@ -14,6 +14,19 @@ #include +/* Return codes */ +enum { + ROCKER_OK = 0, + ROCKER_ENOENT = 2, + ROCKER_ENXIO = 6, + ROCKER_ENOMEM = 12, + ROCKER_EEXIST = 17, + ROCKER_EINVAL = 22, + ROCKER_EMSGSIZE = 90, + ROCKER_ENOTSUP = 95, + ROCKER_ENOBUFS = 105, +}; + #define PCI_VENDOR_ID_REDHAT 0x1b36 #define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 -- 2.34.1