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igb: Acquire, release semaphore for writing each EEPROM page 

This patch allows software acquires and releases NVM resource for
writing each EEPROM page, instead of holding semaphore for the whole
data block which is too long and could trigger write fails on
unpredictable addresses.

Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Akeem G. Abodunrin 2012-11-03 03:08:41 +00:00 committed by Jeff Kirsher
parent 1720ee3e40
commit 23e0f1488f
1 changed files with 12 additions and 16 deletions
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28
drivers/net/ethernet/intel/igb/e1000_nvm.c
View File

@ -438,7 +438,7 @@ out:
s32 igb_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data) s32 igb_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
{ {
struct e1000_nvm_info *nvm = &hw->nvm; struct e1000_nvm_info *nvm = &hw->nvm;
s32 ret_val; s32 ret_val = -E1000_ERR_NVM;
u16 widx = 0; u16 widx = 0;
/* /*
@ -448,22 +448,21 @@ s32 igb_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) || if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
(words == 0)) { (words == 0)) {
hw_dbg("nvm parameter(s) out of bounds\n"); hw_dbg("nvm parameter(s) out of bounds\n");
ret_val = -E1000_ERR_NVM; return ret_val;
goto out;
} }
ret_val = hw->nvm.ops.acquire(hw);
if (ret_val)
goto out;
msleep(10);
while (widx < words) { while (widx < words) {
u8 write_opcode = NVM_WRITE_OPCODE_SPI; u8 write_opcode = NVM_WRITE_OPCODE_SPI;
ret_val = igb_ready_nvm_eeprom(hw); ret_val = nvm->ops.acquire(hw);
if (ret_val) if (ret_val)
goto release; return ret_val;
ret_val = igb_ready_nvm_eeprom(hw);
if (ret_val) {
nvm->ops.release(hw);
return ret_val;
}
igb_standby_nvm(hw); igb_standby_nvm(hw);
@ -497,13 +496,10 @@ s32 igb_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
break; break;
} }
} }
usleep_range(1000, 2000);
nvm->ops.release(hw);
} }
msleep(10);
release:
hw->nvm.ops.release(hw);
out:
return ret_val; return ret_val;
} }