Commit 7e8b3dfe authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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USB: EHCI: declare hostpc register as zero-length array

The HOSTPC extension registers found in some EHCI implementations form
a variable-length array, with one element for each port.  Therefore
the hostpc field in struct ehci_regs should be declared as a
zero-length array, not a single-element array.

This fixes a problem reported by UBSAN.
Signed-off-by: default avatarAlan Stern <>
Reported-by: default avatarWilfried Klaebe <>
Tested-by: default avatarWilfried Klaebe <>
CC: <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 1a34c4d0
......@@ -180,11 +180,11 @@ struct ehci_regs {
/* HOSTPC: offset 0x84 */
u32 hostpc[1]; /* HOSTPC extension */
u32 hostpc[0]; /* HOSTPC extension */
#define HOSTPC_PHCD (1<<22) /* Phy clock disable */
#define HOSTPC_PSPD (3<<25) /* Port speed detection */
u32 reserved5[16];
u32 reserved5[17];
/* USBMODE_EX: offset 0xc8 */
u32 usbmode_ex; /* USB Device mode extension */
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