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Y. Srinivasan" , Laxman Dewangan , Len Brown , linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org, linux-snps-arc@lists.infradead.org, linux-tegra@vger.kernel.org, Russell King , Lorenzo Pieralisi , Lyude Paul , Marek Szyprowski , nouveau@lists.freedesktop.org, Palmer Dabbelt , Paul Walmsley , "Rafael J. Wysocki" , Rob Herring , Robin Murphy , Sudeep Holla , Suravee Suthikulpanit , Sven Peter , Thomas Bogendoerfer , Vineet Gupta , Vinod Koul , Wei Liu , Will Deacon , Lu Baolu , Christoph Hellwig , Jerry Snitselaar , Hector Martin , Moritz Fischer , patches@lists.linux.dev, "Rafael J. Wysocki" , Rob Herring , Thierry Reding X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231128_221828_650271_5737ED94 X-CRM114-Status: GOOD ( 16.12 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed"; DelSp="yes" Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org On Tue, Nov 28, 2023 at 08:48:05PM -0400, Jason Gunthorpe wrote: > gcc on i386 (when compile testing) warns: This is a weird test. The Makefile for drivers/acpi/arm64 is conditional on CONFIG_ARM64. How does this happen? > 8->8 obj-$(CONFIG_ARM64) += arm64/ > 8->8 > drivers/acpi/arm64/iort.c:2014:18: warning: implicit conversion > from 'unsigned long long' to 'phys_addr_t' (aka 'unsigned int') changes > value from 18446744073709551615 to 4294967295 [-Wconstant-conversion] > local_limit = > DMA_BIT_MASK(ncomp->memory_address_limit); > Because DMA_BIT_MASK returns a large ULL constant. Explicitly truncate it > to phys_addr_t. > Signed-off-by: Jason Gunthorpe > --- > drivers/acpi/arm64/iort.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c > index 6496ff5a6ba20d..bdaf9256870d92 100644 > --- a/drivers/acpi/arm64/iort.c > +++ b/drivers/acpi/arm64/iort.c > @@ -2011,7 +2011,8 @@ phys_addr_t __init > acpi_iort_dma_get_max_cpu_address(void) > case ACPI_IORT_NODE_NAMED_COMPONENT: > ncomp = (struct acpi_iort_named_component *)node->node_data; > - local_limit = DMA_BIT_MASK(ncomp->memory_address_limit); > + local_limit = (phys_addr_t)DMA_BIT_MASK( > + ncomp->memory_address_limit); > limit = min_not_zero(limit, local_limit); > break; > @@ -2020,7 +2021,8 @@ phys_addr_t __init > acpi_iort_dma_get_max_cpu_address(void) > break; > rc = (struct acpi_iort_root_complex *)node->node_data; > - local_limit = DMA_BIT_MASK(rc->memory_address_limit); > + local_limit = (phys_addr_t)DMA_BIT_MASK( > + rc->memory_address_limit); > limit = min_not_zero(limit, local_limit); > break; > } > -- > 2.42.0 Cheers, Moritz _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc