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iwlwifi: don't verify fw after download 

No need to verify that the fw has been written correctly.
In case it hasn't, we won't get ALIVE notification.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2012-12-24 16:51:22 +02:00 committed by Johannes Berg
parent da58eefa6d
commit d28cbdef8c
1 changed files with 0 additions and 94 deletions
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94
drivers/net/wireless/iwlwifi/dvm/ucode.c
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@ -286,89 +286,6 @@ static int iwl_alive_notify(struct iwl_priv *priv)
return iwl_send_calib_results(priv);
}
/**
* iwl_verify_inst_sparse - verify runtime uCode image in card vs. host,
* using sample data 100 bytes apart. If these sample points are good,
* it's a pretty good bet that everything between them is good, too.
*/
static int iwl_verify_sec_sparse(struct iwl_priv *priv,
const struct fw_desc *fw_desc)
{
__le32 *image = (__le32 *)fw_desc->data;
u32 len = fw_desc->len;
u32 val;
u32 i;
IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
/* read data comes through single port, auto-incr addr */
/* NOTE: Use the debugless read so we don't flood kernel log
* if IWL_DL_IO is set */
iwl_write_direct32(priv->trans, HBUS_TARG_MEM_RADDR,
i + fw_desc->offset);
val = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image))
return -EIO;
}
return 0;
}
static void iwl_print_mismatch_sec(struct iwl_priv *priv,
const struct fw_desc *fw_desc)
{
__le32 *image = (__le32 *)fw_desc->data;
u32 len = fw_desc->len;
u32 val;
u32 offs;
int errors = 0;
IWL_DEBUG_FW(priv, "ucode inst image size is %u\n", len);
iwl_write_direct32(priv->trans, HBUS_TARG_MEM_RADDR,
fw_desc->offset);
for (offs = 0;
offs < len && errors < 20;
offs += sizeof(u32), image++) {
/* read data comes through single port, auto-incr addr */
val = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
if (val != le32_to_cpu(*image)) {
IWL_ERR(priv, "uCode INST section at "
"offset 0x%x, is 0x%x, s/b 0x%x\n",
offs, val, le32_to_cpu(*image));
errors++;
}
}
}
/**
* iwl_verify_ucode - determine which instruction image is in SRAM,
* and verify its contents
*/
static int iwl_verify_ucode(struct iwl_priv *priv,
enum iwl_ucode_type ucode_type)
{
const struct fw_img *img = iwl_get_ucode_image(priv, ucode_type);
if (!img) {
IWL_ERR(priv, "Invalid ucode requested (%d)\n", ucode_type);
return -EINVAL;
}
if (!iwl_verify_sec_sparse(priv, &img->sec[IWL_UCODE_SECTION_INST])) {
IWL_DEBUG_FW(priv, "uCode is good in inst SRAM\n");
return 0;
}
IWL_ERR(priv, "UCODE IMAGE IN INSTRUCTION SRAM NOT VALID!!\n");
iwl_print_mismatch_sec(priv, &img->sec[IWL_UCODE_SECTION_INST]);
return -EIO;
}
struct iwl_alive_data {
bool valid;
u8 subtype;
@ -450,18 +367,7 @@ int iwl_load_ucode_wait_alive(struct iwl_priv *priv,
return -EIO;
}
/*
* This step takes a long time (60-80ms!!) and
* WoWLAN image should be loaded quickly, so
* skip it for WoWLAN.
*/
if (ucode_type != IWL_UCODE_WOWLAN) {
ret = iwl_verify_ucode(priv, ucode_type);
if (ret) {
priv->cur_ucode = old_type;
return ret;
}
/* delay a bit to give rfkill time to run */
msleep(5);
}