EDAC/altera: Use INTTEST register for Ethernet and USB SBE injection

commit 281326be67252ac5794d1383f67526606b1d6b13 upstream.

The current single-bit error injection mechanism flips bits directly in ECC RAM
by performing write and read operations. When the ECC RAM is actively used by
the Ethernet or USB controller, this approach sometimes trigger a false
double-bit error.

Switch both Ethernet and USB EDAC devices to use the INTTEST register
(altr_edac_a10_device_inject_fops) for single-bit error injection, similar to
the existing double-bit error injection method.

Fixes: 064acbd4f4ab ("EDAC, altera: Add Stratix10 peripheral support")
Signed-off-by: Niravkumar L Rabara <niravkumarlaxmidas.rabara@altera.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251111081333.1279635-1-niravkumarlaxmidas.rabara@altera.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index 25f49d139b38a9d97e03bda35e8ac053bf2aaa19..6e2f38a15efef79ba3f54c3b01705cf18c11d86b 100644 (file)
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -1432,7 +1432,7 @@ static const struct edac_device_prv_data a10_enetecc_data = {
        .ue_set_mask = ALTR_A10_ECC_TDERRA,
        .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
        .ecc_irq_handler = altr_edac_a10_ecc_irq,
-       .inject_fops = &altr_edac_a10_device_inject2_fops,
+       .inject_fops = &altr_edac_a10_device_inject_fops,
 };
 
 #endif /* CONFIG_EDAC_ALTERA_ETHERNET */
@@ -1522,7 +1522,7 @@ static const struct edac_device_prv_data a10_usbecc_data = {
        .ue_set_mask = ALTR_A10_ECC_TDERRA,
        .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
        .ecc_irq_handler = altr_edac_a10_ecc_irq,
-       .inject_fops = &altr_edac_a10_device_inject2_fops,
+       .inject_fops = &altr_edac_a10_device_inject_fops,
 };
 
 #endif /* CONFIG_EDAC_ALTERA_USB */