dpll: fix clock quality level reporting

JIRA: https://issues.redhat.com/browse/RHEL-126529

Upstream commit(s):
commit 70d9962
Author: Ivan Vecera <ivecera@redhat.com>
Date:   Fri Sep 12 11:33:31 2025 +0200

    dpll: fix clock quality level reporting

    The DPLL_CLOCK_QUALITY_LEVEL_ITU_OPT1_EPRC is not reported via netlink
    due to bug in dpll_msg_add_clock_quality_level(). The usage of
    DPLL_CLOCK_QUALITY_LEVEL_MAX for both DECLARE_BITMAP() and
    for_each_set_bit() is not correct because these macros requires bitmap
    size and not the highest valid bit in the bitmap.

    Use correct bitmap size to fix this issue.

    Fixes: a1afb95 ("dpll: add clock quality level attribute and op")
    Signed-off-by: Ivan Vecera <ivecera@redhat.com>
    Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
    Link: https://patch.msgid.link/20250912093331.862333-1-ivecera@redhat.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Petr Oros <poros@redhat.com>

Author: orosp

drivers/dpll/dpll_netlink.c

@@ -211,8 +211,8 @@ static int
 dpll_msg_add_clock_quality_level(struct sk_buff *msg, struct dpll_device *dpll,
 				 struct netlink_ext_ack *extack)
 {
+	DECLARE_BITMAP(qls, DPLL_CLOCK_QUALITY_LEVEL_MAX + 1) = { 0 };
 	const struct dpll_device_ops *ops = dpll_device_ops(dpll);
-	DECLARE_BITMAP(qls, DPLL_CLOCK_QUALITY_LEVEL_MAX) = { 0 };
 	enum dpll_clock_quality_level ql;
 	int ret;
 
@@ -221,7 +221,7 @@ dpll_msg_add_clock_quality_level(struct sk_buff *msg, struct dpll_device *dpll,
 	ret = ops->clock_quality_level_get(dpll, dpll_priv(dpll), qls, extack);
 	if (ret)
 		return ret;
-	for_each_set_bit(ql, qls, DPLL_CLOCK_QUALITY_LEVEL_MAX)
+	for_each_set_bit(ql, qls, DPLL_CLOCK_QUALITY_LEVEL_MAX + 1)
 		if (nla_put_u32(msg, DPLL_A_CLOCK_QUALITY_LEVEL, ql))
 			return -EMSGSIZE;