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Commit 340a1be1 authored by Mike Frysinger's avatar Mike Frysinger
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Blackfin: drop ptrace() write support for fixed code/bootrom 



These regions are either read-only and won't work anyways (bootrom), or
we don't want people screwing with them because they're shared between
all processes (fixed code).

Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent e187837b

arch/blackfin/kernel/ptrace.c

+0 −13
Original line number Original line Diff line number Diff line
@@ -316,19 +316,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) 
			case BFIN_MEM_ACCESS_CORE_ONLY:

			case BFIN_MEM_ACCESS_CORE_ONLY:

				copied = access_process_vm(child, addr, &data,

				copied = access_process_vm(child, addr, &data,

				                           to_copy, 1);

				                           to_copy, 1);

				if (copied)

					break;



				/* hrm, why didn't that work ... maybe no mapping */

				if (addr >= FIXED_CODE_START &&

				    addr + to_copy <= FIXED_CODE_END) {

					copy_to_user_page(0, 0, 0, paddr, &data, to_copy);

					copied = to_copy;

				} else if (addr >= BOOT_ROM_START) {

					memcpy(paddr, &data, to_copy);

					copied = to_copy;

				}



				break;

				break;

			case BFIN_MEM_ACCESS_DMA:

			case BFIN_MEM_ACCESS_DMA:

				if (safe_dma_memcpy(paddr, &data, to_copy))

				if (safe_dma_memcpy(paddr, &data, to_copy))