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| author | Jean Delvare <khali@linux-fr.org> | 2006-06-04 19:59:57 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-22 20:10:33 +0200 |
| commit | aee62305345863430a937af289b9bd080a100dac (patch) | |
| tree | 7e145ccf7052fd298ed94b75e7f9e85a64999a53 | |
| parent | [PATCH] HWMON: Trim VID values to correct number of bits (diff) | |
| download | linux-aee62305345863430a937af289b9bd080a100dac.tar.xz linux-aee62305345863430a937af289b9bd080a100dac.zip | |
[PATCH] i2c: Suggest N for rare devices in Kconfig
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=114360399415744&w=2
April 2006, thread "i2c-related 1-minute hang during bootup"
http://marc.theaimsgroup.com/?l=linux-kernel&m=114640992330721&w=2
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/i2c/busses/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/i2c/chips/Kconfig | 8 |
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index e3450d16d8a4..d25a8cbbec0a 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -503,6 +503,7 @@ config I2C_PCA_ISA 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 @@ config I2C_PCA_ISA 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 diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig index 7aa5c38f0855..87ee3ce58618 100644 --- a/drivers/i2c/chips/Kconfig +++ b/drivers/i2c/chips/Kconfig @@ -39,6 +39,7 @@ config SENSORS_EEPROM 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 @@ config SENSORS_PCF8574 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_PCA9539 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 |