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authorJean Delvare <khali@linux-fr.org>2006-06-04 13:59:57 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-06-22 14:10:33 -0400
commitaee62305345863430a937af289b9bd080a100dac (patch)
tree7e145ccf7052fd298ed94b75e7f9e85a64999a53
parent177d165d7c2ec424007d6241a93d0cb83d953c51 (diff)
[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/Kconfig6
-rw-r--r--drivers/i2c/chips/Kconfig8
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
503 tristate "PCA9564 on an ISA bus" 503 tristate "PCA9564 on an ISA bus"
504 depends on I2C 504 depends on I2C
505 select I2C_ALGOPCA 505 select I2C_ALGOPCA
506 default n
506 help 507 help
507 This driver supports ISA boards using the Philips PCA 9564 508 This driver supports ISA boards using the Philips PCA 9564
508 Parallel bus to I2C bus controller 509 Parallel bus to I2C bus controller
@@ -510,6 +511,11 @@ config I2C_PCA_ISA
510 This driver can also be built as a module. If so, the module 511 This driver can also be built as a module. If so, the module
511 will be called i2c-pca-isa. 512 will be called i2c-pca-isa.
512 513
514 This device is almost undetectable and using this driver on a
515 system which doesn't have this device will result in long
516 delays when I2C/SMBus chip drivers are loaded (e.g. at boot
517 time). If unsure, say N.
518
513config I2C_MV64XXX 519config I2C_MV64XXX
514 tristate "Marvell mv64xxx I2C Controller" 520 tristate "Marvell mv64xxx I2C Controller"
515 depends on I2C && MV64X60 && EXPERIMENTAL 521 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
39config SENSORS_PCF8574 39config SENSORS_PCF8574
40 tristate "Philips PCF8574 and PCF8574A" 40 tristate "Philips PCF8574 and PCF8574A"
41 depends on I2C && EXPERIMENTAL 41 depends on I2C && EXPERIMENTAL
42 default n
42 help 43 help
43 If you say yes here you get support for Philips PCF8574 and 44 If you say yes here you get support for Philips PCF8574 and
44 PCF8574A chips. 45 PCF8574A chips.
@@ -46,6 +47,9 @@ config SENSORS_PCF8574
46 This driver can also be built as a module. If so, the module 47 This driver can also be built as a module. If so, the module
47 will be called pcf8574. 48 will be called pcf8574.
48 49
50 These devices are hard to detect and rarely found on mainstream
51 hardware. If unsure, say N.
52
49config SENSORS_PCA9539 53config SENSORS_PCA9539
50 tristate "Philips PCA9539 16-bit I/O port" 54 tristate "Philips PCA9539 16-bit I/O port"
51 depends on I2C && EXPERIMENTAL 55 depends on I2C && EXPERIMENTAL
@@ -59,12 +63,16 @@ config SENSORS_PCA9539
59config SENSORS_PCF8591 63config SENSORS_PCF8591
60 tristate "Philips PCF8591" 64 tristate "Philips PCF8591"
61 depends on I2C && EXPERIMENTAL 65 depends on I2C && EXPERIMENTAL
66 default n
62 help 67 help
63 If you say yes here you get support for Philips PCF8591 chips. 68 If you say yes here you get support for Philips PCF8591 chips.
64 69
65 This driver can also be built as a module. If so, the module 70 This driver can also be built as a module. If so, the module
66 will be called pcf8591. 71 will be called pcf8591.
67 72
73 These devices are hard to detect and rarely found on mainstream
74 hardware. If unsure, say N.
75
68config ISP1301_OMAP 76config ISP1301_OMAP
69 tristate "Philips ISP1301 with OMAP OTG" 77 tristate "Philips ISP1301 with OMAP OTG"
70 depends on I2C && ARCH_OMAP_OTG 78 depends on I2C && ARCH_OMAP_OTG