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Commit b3bf147b authored by Oded Gabbay's avatar Oded Gabbay Committed by Greg Kroah-Hartman
Browse files

habanalabs: use do_div for 64-bit divisions 



This patch fix compilation error in 32-bit ARM architecture regarding
division of 2 64-bit variables.

Use the kernel do_div() macro, which is implemented per architecture, for
doing these divisions instead of using the / operator.

Reported-by: default avatarkbuild test robot <lkp@intel.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 91d3f8a6

drivers/misc/habanalabs/mmu.c

+6 −6
Original line number Diff line number Diff line
@@ -261,9 +261,9 @@ int hl_mmu_ctx_init(struct hl_ctx *ctx) 
			!hdev->dram_default_page_mapping)

		return 0;



	num_of_hop3 = (prop->dram_size_for_default_page_mapping /

			prop->dram_page_size) /

			PTE_ENTRIES_IN_HOP;

	num_of_hop3 = prop->dram_size_for_default_page_mapping;

	do_div(num_of_hop3, prop->dram_page_size);

	do_div(num_of_hop3, PTE_ENTRIES_IN_HOP);



	/* add hop1 and hop2 */

	total_hops = num_of_hop3 + 2;
@@ -378,9 +378,9 @@ void hl_mmu_ctx_fini(struct hl_ctx *ctx) 
	if (hdev->dram_supports_virtual_memory &&

			hdev->dram_default_page_mapping) {



		num_of_hop3 = (prop->dram_size_for_default_page_mapping /

				prop->dram_page_size) /

				PTE_ENTRIES_IN_HOP;

		num_of_hop3 = prop->dram_size_for_default_page_mapping;

		do_div(num_of_hop3, prop->dram_page_size);

		do_div(num_of_hop3, PTE_ENTRIES_IN_HOP);



		/* add hop1 and hop2 */

		total_hops = num_of_hop3 + 2;