From: Randy Dunlap Subject: Re: [PATCH] crypto: cavium: fix Kconfig dependencies Date: Tue, 14 Feb 2017 10:26:52 -0800 Message-ID: <47441e97-99be-15e7-ea15-b35a4a827139@infradead.org> References: <20170214170739.2687818-1-arnd@arndb.de> <09cdd8d4-f84b-9664-15e2-4fe923d0b744@caviumnetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: David Daney , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org To: David Daney , Arnd Bergmann , George Cherian , Herbert Xu , "David S. Miller" Return-path: Received: from merlin.infradead.org ([205.233.59.134]:49738 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751591AbdBNS07 (ORCPT ); Tue, 14 Feb 2017 13:26:59 -0500 In-Reply-To: <09cdd8d4-f84b-9664-15e2-4fe923d0b744@caviumnetworks.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: On 02/14/17 09:09, David Daney wrote: > On 02/14/2017 09:07 AM, Arnd Bergmann wrote: >> The driver fails to build if MSI support is disabled: >> >> In file included from /git/arm-soc/drivers/crypto/cavium/cpt/cptpf_main.c:18:0: >> drivers/crypto/cavium/cpt/cptpf.h:57:20: error: array type has incomplete element type 'struct msix_entry' >> struct msix_entry msix_entries[CPT_PF_MSIX_VECTORS]; >> ^~~~~~~~~~~~ >> drivers/crypto/cavium/cpt/cptpf_main.c: In function 'cpt_enable_msix': >> drivers/crypto/cavium/cpt/cptpf_main.c:344:8: error: implicit declaration of function 'pci_enable_msix';did you mean 'cpt_enable_msix'? [-Werror=implicit-function-declaration] >> >> On the other hand, it doesn't seem to have any build dependency on ARCH_THUNDER, >> so let's allow compile-testing to catch this kind of problem more easily. >> The 64-bit dependency is needed for the use of readq/writeq. >> >> Signed-off-by: Arnd Bergmann >> --- >> drivers/crypto/cavium/cpt/Kconfig | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/crypto/cavium/cpt/Kconfig b/drivers/crypto/cavium/cpt/Kconfig >> index 247f1cbbefc1..cbd51b1aa046 100644 >> --- a/drivers/crypto/cavium/cpt/Kconfig >> +++ b/drivers/crypto/cavium/cpt/Kconfig >> @@ -7,7 +7,8 @@ config CRYPTO_DEV_CPT >> >> config CAVIUM_CPT >> tristate "Cavium Cryptographic Accelerator driver" >> - depends on ARCH_THUNDER >> + depends on ARCH_THUNDER || COMPILE_TEST >> + depends on PCI_MSI && 64BIT > > > Perhaps we should select PCI and PCI_MSI instead. > > These systems cannot function without those. Then the "depends" (and hence the patch) is correct. A driver should not enable all of PCI if it is disabled for some other reason. >> select CRYPTO_DEV_CPT >> help >> Support for Cavium CPT block found in octeon-tx series of >> > -- ~Randy