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More rdc-2.6 fixes by Daniel Gimpelevich, thanks !

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8355 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
florian
2007-08-06 18:48:58 +00:00
parent 533b9e3bd4
commit d03a2de5d3
11 changed files with 144 additions and 34 deletions
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36
target/linux/generic-2.6/patches-2.6.22/002-eeprom_93cx6.patch Normal file
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@@ -0,0 +1,36 @@
From: John W. Linville <linville@tuxdriver.com>
Date: Tue, 12 Jun 2007 01:37:46 +0000 (-0400)
Subject: [PATCH] eeprom_93cx6: shorten pulse timing to match spec
X-Git-Tag: v2.6.23-rc1~1201^2~71
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=7e9400f178d291b2208c4ed9aac0f425c1364000
[PATCH] eeprom_93cx6: shorten pulse timing to match spec
93cx6 datasheet available here:
http://ww1.microchip.com/downloads/en/DeviceDoc/21749F.pdf
Figure 1-1 and Table 1-2 on pages 4-5 indicate that both Clock High
Time and Clock Low Time have largest minimum times of 450ns.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
diff --git a/drivers/misc/eeprom_93cx6.c b/drivers/misc/eeprom_93cx6.c
index 0d6d742..ac515b0 100644
--- a/drivers/misc/eeprom_93cx6.c
+++ b/drivers/misc/eeprom_93cx6.c
@@ -42,10 +42,10 @@ static inline void eeprom_93cx6_pulse_high(struct eeprom_93cx6 *eeprom)
/*
* Add a short delay for the pulse to work.
- * According to the specifications the minimal time
- * should be 450ns so a 1us delay is sufficient.
+ * According to the specifications the "maximum minimum"
+ * time should be 450ns.
*/
- udelay(1);
+ ndelay(450);
}
static inline void eeprom_93cx6_pulse_low(struct eeprom_93cx6 *eeprom)