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[ARM] 4629/1: Fix VFP emulation code to clear all exception flags of FPEXC

All exception flags of the FPEXC register must be cleared before
returning from exception code to user code, including FP2V and OFC.

Signed-off-by: Takashi Ohmasa <ohmasa.takashi@jp.panasonic.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Takashi Ohmasa 17 ani în urmă
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67f18f3458
1 a modificat fișierele cu 1 adăugiri și 1 ștergeri
  1. 1 1
      arch/arm/vfp/vfpmodule.c

+ 1 - 1
arch/arm/vfp/vfpmodule.c

@@ -229,7 +229,7 @@ void VFP9_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs)
 	/*
 	 * Enable access to the VFP so we can handle the bounce.
 	 */
-	fmxr(FPEXC, fpexc & ~(FPEXC_EX|FPEXC_INV|FPEXC_UFC|FPEXC_IOC));
+	fmxr(FPEXC, fpexc & ~(FPEXC_EX|FPEXC_FPV2|FPEXC_INV|FPEXC_UFC|FPEXC_OFC|FPEXC_IOC));
 
 	orig_fpscr = fpscr = fmrx(FPSCR);