b1992c37 - kbuild: use $(src) instead of $(srctree)/$(src) for source directory

Sat, 27 Apr 2024 14:55:02 +0000

kbuild: use $(src) instead of $(srctree)/$(src) for source directoryKbuild conventionally uses $(obj)/ for generated files, and $(src)/ forchecked-in source files. It is merely a convention without any functionaldifference. In fact, $(obj) and $(src) are exactly the same, as definedin scripts/Makefile.build: src := $(obj)When the kernel is built in a separate output directory, $(src) doesnot accurately reflect the source directory location. While Kbuildresolves this discrepancy by specifying VPATH=$(srctree) to search forsource files, it does not cover all cases. For example, when adding aheader search path for local headers, -I$(srctree)/$(src) is typicallypassed to the compiler.This introduces inconsistency between upstream and downstream Makefilesbecause $(src) is used instead of $(srctree)/$(src) for the latter.To address this inconsistency, this commit changes the semantics of$(src) so that it always points to the directory in the source tree.Going forward, the variables used in Makefiles will have the followingmeanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source treeConsequently, $(srctree)/$(src) in upstream Makefiles need to be replacedwith $(src).Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier List of files: /linux-6.15/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bca/Makefile

b1d94be5 - wifi: brcmfmac: add support Broadcom BCA firmware api

Tue, 29 Nov 2022 13:54:44 +0000

wifi: brcmfmac: add support Broadcom BCA firmware apiBroadcom BCA division develops its own firmware api and as such willlikely diverge over time (or already has). Add support for handlingthis.Reviewed-by: Hante Meuleman Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Franky Lin Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20221129135446.151065-6-arend.vanspriel@broadcom.com List of files: /linux-6.15/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bca/Makefile

Changes in Makefile

b1992c37 - kbuild: use $(src) instead of $(srctree)/$(src) for source directory

b1d94be5 - wifi: brcmfmac: add support Broadcom BCA firmware api