From: khali@linux-fr.org (Jean Delvare)
To: lm-sensors@vger.kernel.org
Subject: [lm-sensors] [PATCH 01/11] i2c: Suggest N for rare devices in
Date: Sun, 04 Jun 2006 17:59:57 +0000 [thread overview]
Message-ID: <20060604195957.ff0438f5.khali@linux-fr.org> (raw)
Content-Disposition: inline; filename=i2c-Kconfig-suggest-N-for-rare-devices.patch
Improve the Kconfig help text of the follwing i2c drivers:
* busses/i2c-pca-isa.c
* chips/pcf8574.c
* chips/pcf8591.c
These are hard to detect and building them into the kernel
results in long delays at boot.
March 2006, thread "I2C_PCA_ISA causes boot delays"
http://marc.theaimsgroup.com/?l=linux-kernel&m\x114360399415744&w=2
April 2006, thread "i2c-related 1-minute hang during bootup"
http://marc.theaimsgroup.com/?l=linux-kernel&m\x114640992330721&w=2
Signed-off-by: Jean Delvare <khali at linux-fr.org>
---
drivers/i2c/busses/Kconfig | 6 ++++++
drivers/i2c/chips/Kconfig | 8 ++++++++
2 files changed, 14 insertions(+)
--- linux-2.6.17-rc5.orig/drivers/i2c/busses/Kconfig 2006-06-04 09:50:19.000000000 +0200
+++ linux-2.6.17-rc5/drivers/i2c/busses/Kconfig 2006-06-04 09:54:00.000000000 +0200
@@ -503,6 +503,7 @@
tristate "PCA9564 on an ISA bus"
depends on I2C
select I2C_ALGOPCA
+ default n
help
This driver supports ISA boards using the Philips PCA 9564
Parallel bus to I2C bus controller
@@ -510,6 +511,11 @@
This driver can also be built as a module. If so, the module
will be called i2c-pca-isa.
+ This device is almost undetectable and using this driver on a
+ system which doesn't have this device will result in long
+ delays when I2C/SMBus chip drivers are loaded (e.g. at boot
+ time). If unsure, say N.
+
config I2C_MV64XXX
tristate "Marvell mv64xxx I2C Controller"
depends on I2C && MV64X60 && EXPERIMENTAL
--- linux-2.6.17-rc5.orig/drivers/i2c/chips/Kconfig 2006-06-04 09:50:19.000000000 +0200
+++ linux-2.6.17-rc5/drivers/i2c/chips/Kconfig 2006-06-04 09:51:38.000000000 +0200
@@ -39,6 +39,7 @@
config SENSORS_PCF8574
tristate "Philips PCF8574 and PCF8574A"
depends on I2C && EXPERIMENTAL
+ default n
help
If you say yes here you get support for Philips PCF8574 and
PCF8574A chips.
@@ -46,6 +47,9 @@
This driver can also be built as a module. If so, the module
will be called pcf8574.
+ These devices are hard to detect and rarely found on mainstream
+ hardware. If unsure, say N.
+
config SENSORS_PCA9539
tristate "Philips PCA9539 16-bit I/O port"
depends on I2C && EXPERIMENTAL
@@ -59,12 +63,16 @@
config SENSORS_PCF8591
tristate "Philips PCF8591"
depends on I2C && EXPERIMENTAL
+ default n
help
If you say yes here you get support for Philips PCF8591 chips.
This driver can also be built as a module. If so, the module
will be called pcf8591.
+ These devices are hard to detect and rarely found on mainstream
+ hardware. If unsure, say N.
+
config ISP1301_OMAP
tristate "Philips ISP1301 with OMAP OTG"
depends on I2C && ARCH_OMAP_OTG
--
Jean Delvare
reply other threads:[~2006-06-04 17:59 UTC|newest]
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