scsw_tm_is_valid_pno(9)

okay so, bestie, we're flipping through the Kernel API Manual and this little page is scsw_tm_is_valid_pno(9) — yes, that exact one, no cap. 💅 It's serving one very specific field-validity check, and we're keeping every single detail because that's the whole point. 🫶

💖 NAME 💖

scsw_tm_is_valid_pno — check pno field validity. That's it, that's the whole name, and it is literally checking whether that field is valid. ✨

📜 SYNOPSIS 📜

int scsw_tm_is_valid_pno (union scsw *scsw );

🎀 ARGUMENTS 🎀

• scsw — pointer to scsw. That's the argument, bb: a pointer to an scsw. 🦋

💫 DESCRIPTION 💫

Return non-zero if the pno field of the specified transport mode scsw is valid, zero otherwise. So: non-zero = valid, zero = otherwise. That's the whole return situation, and I'm obsessed with how simple it is. 💖

🔥 SEE ALSO 🔥

Kernel file ./arch/s390/include/asm/scsw.h — yes, that path, go peek at it, bestie. Then the whole friend group is:

• struct cmd_scsw(9), struct tm_scsw(9), struct eadm_scsw(9), union scsw(9), scsw_is_tm(9), scsw_key(9), scsw_eswf(9), scsw_cc(9), scsw_ectl(9), scsw_pno(9), scsw_fctl(9), scsw_actl(9), scsw_stctl(9), scsw_dstat(9), scsw_cstat(9)
• scsw_cmd_is_valid_key(9), scsw_cmd_is_valid_sctl(9), scsw_cmd_is_valid_eswf(9), scsw_cmd_is_valid_cc(9), scsw_cmd_is_valid_fmt(9), scsw_cmd_is_valid_pfch(9), scsw_cmd_is_valid_isic(9), scsw_cmd_is_valid_alcc(9), scsw_cmd_is_valid_ssi(9), scsw_cmd_is_valid_zcc(9), scsw_cmd_is_valid_ectl(9), scsw_cmd_is_valid_pno(9), scsw_cmd_is_valid_fctl(9), scsw_cmd_is_valid_actl(9), scsw_cmd_is_valid_stctl(9), scsw_cmd_is_valid_dstat(9), scsw_cmd_is_valid_cstat(9)
• scsw_tm_is_valid_key(9), scsw_tm_is_valid_eswf(9), scsw_tm_is_valid_cc(9), scsw_tm_is_valid_fmt(9), scsw_tm_is_valid_x(9), scsw_tm_is_valid_q(9), scsw_tm_is_valid_ectl(9), scsw_tm_is_valid_fctl(9), scsw_tm_is_valid_actl(9), scsw_tm_is_valid_stctl(9), scsw_tm_is_valid_dstat(9), scsw_tm_is_valid_cstat(9), scsw_tm_is_valid_fcxs(9), scsw_tm_is_valid_schxs(9)
• scsw_is_valid_actl(9), scsw_is_valid_cc(9), scsw_is_valid_cstat(9), scsw_is_valid_dstat(9), scsw_is_valid_ectl(9), scsw_is_valid_eswf(9), scsw_is_valid_fctl(9), scsw_is_valid_key(9), scsw_is_valid_pno(9), scsw_is_valid_stctl(9), scsw_cmd_is_solicited(9), scsw_tm_is_solicited(9), scsw_is_solicited(9)

mwah 💋 — this page is from ./arch/s390/include/asm, dated October 2026. Go be iconic with your pno checks, bestie. 🌈👑