lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 2 Oct 2018 06:21:40 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, Matt Ranostay <matt.ranostay@...sulko.com>, Sasha Levin <alexander.levin@...rosoft.com> Subject: [PATCH 4.18 003/228] tsl2550: fix lux1_input error in low light 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Matt Ranostay <matt.ranostay@...sulko.com> [ Upstream commit ce054546cc2c26891cefa2f284d90d93b52205de ] ADC channel 0 photodiode detects both infrared + visible light, but ADC channel 1 just detects infrared. However, the latter is a bit more sensitive in that range so complete darkness or low light causes a error condition in which the chan0 - chan1 is negative that results in a -EAGAIN. This patch changes the resulting lux1_input sysfs attribute message from "Resource temporarily unavailable" to a user-grokable lux value of 0. Cc: Arnd Bergmann <arnd@...db.de> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Matt Ranostay <matt.ranostay@...sulko.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/misc/tsl2550.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/misc/tsl2550.c +++ b/drivers/misc/tsl2550.c @@ -177,7 +177,7 @@ static int tsl2550_calculate_lux(u8 ch0, } else lux = 0; else - return -EAGAIN; + return 0; /* LUX range check */ return lux > TSL2550_MAX_LUX ? TSL2550_MAX_LUX : lux;
Powered by blists - more mailing lists