From cd395d529faf46bd7fd799852a659ca1bd650a27 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 18 Sep 2021 11:15:01 -0700 Subject: [PATCH] tgafb: clarify dependencies MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The TGA boards were based on the DECchip 21030 PCI graphics accelerator used mainly for alpha, and existed in a TURBOchannel (TC) version for the DECstation (MIPS) workstations. However, the config option for the TGA code is a bit confused, and says depends on FB && (ALPHA || TC) because people didn't really want to enable the option for random PCI environments, so the "ALPHA" stands in for that case (while the TC case is then the MIPS DECstation case). So that config dependency is kind of a mixture of architecture and bus choices. But it's incorrect, in that there were non-PCI-based alpha hardware, and then the driver just causes warnings: drivers/video/fbdev/tgafb.c:1532:13: error: ‘tgafb_unregister’ defined but not used [-Werror=unused-function] 1532 | static void tgafb_unregister(struct device *dev) | ^~~~~~~~~~~~~~~~ drivers/video/fbdev/tgafb.c:1387:12: error: ‘tgafb_register’ defined but not used [-Werror=unused-function] 1387 | static int tgafb_register(struct device *dev) | ^~~~~~~~~~~~~~ so let's make the config option dependencies a bit more explict: depends on FB depends on PCI || TC depends on ALPHA || TC where that first "FB" is the software configuration dependency, the second "PCI || TC" is the hardware bus dependency, while that final "ALPHA || TC" dependency is the "don't bother asking except for these situations. We could make that third case have "COMPILE_TEST" as an option, and mark the register/unregister functions as __maybe_unused, but I'm not sure it's really worth it. Signed-off-by: Linus Torvalds --- drivers/video/fbdev/Kconfig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index d33c5cd684c0..b26b79dfcac9 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -582,7 +582,9 @@ config FB_HP300 config FB_TGA tristate "TGA/SFB+ framebuffer support" - depends on FB && (ALPHA || TC) + depends on FB + depends on PCI || TC + depends on ALPHA || TC select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT