From mboxrd@z Thu Jan 1 00:00:00 1970 From: matt@codeblueprint.co.uk (Matt Fleming) Date: Wed, 23 Mar 2016 16:16:24 +0000 Subject: [PATCH 2/2] arm*: efi: drop writable mapping of the UEFI System table In-Reply-To: References: <1456496435-12679-1-git-send-email-ard.biesheuvel@linaro.org> <1456496435-12679-2-git-send-email-ard.biesheuvel@linaro.org> <20160226150156.GC7475@codeblueprint.co.uk> Message-ID: <20160323161624.GG11676@codeblueprint.co.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, 22 Mar, at 04:08:24PM, Ard Biesheuvel wrote: > > This patch causes a warning I hadn't spotted before sending it out. > Could you fold this in please? > > diff --git a/drivers/firmware/efi/arm-runtime.c > b/drivers/firmware/efi/arm-runtime.c > index 6c97d4884fc7..fe749da9997e 100644 > --- a/drivers/firmware/efi/arm-runtime.c > +++ b/drivers/firmware/efi/arm-runtime.c > @@ -72,8 +72,8 @@ static bool __init efi_virtmap_init(void) > */ > if (efi_system_table >= phys && > efi_system_table < phys + (md->num_pages * EFI_PAGE_SIZE)) { > - efi.systab = (void *)(efi_system_table - phys + > - md->virt_addr); > + efi.systab = (void *)(unsigned long)(efi_system_table - > + phys + md->virt_addr); > systab_found = true; > } > } Done, please check, https://git.kernel.org/cgit/linux/kernel/git/mfleming/efi.git/commit/?h=next&id=4fd5c619dcf4f3d2c86d4a686ce66fc01e877a08